[Feature] Implement internazionalization for Decky Loader (#361)

* First iteration for internationalization of the loader

* First iteration for internationalization of the loader

* Cleanup node mess

* Cleanup node mess pt2

* Additional touches

* Latest decky changed merged into i18n and updated translation.

* Styling fixes

* Initial backend hosting implementation

* Added correct url path of the loopback server.

* Added correct url path of the loopback server.

* Some better namespaced text.

* Added whitelist for locales path.

* Refactor languages and fix hooks logic bugs.

* Small typo in language translation structure.

* Working backend, automatically swtich languages with steam and language fixes.

* Fix to languages

* Key fixes

* Additional language fixes.

* Additional json changes

* Final text revision and added a vscode tasks to automatically extract text from code.

* Typo in the middleware

* Remove unused imports

* Cleanup whitespaces.

* Import changes

* Revert "Import changes"

This reverts commit 8e8231950f.

* Update index.d.ts

* Clean up unused imports

* Delete pnpm-lock.yaml

* Update rollup.config.js

* Update PluginInstallModal.tsx

* Update index.tsx

* Update plugin-loader.tsx

* Update plugin-loader.tsx

* Revert "Delete pnpm-lock.yaml"

This reverts commit 3a39f36f21.

* Additional strings reworks.

* Fixes for issues coming from github merge.

* Fixes for master

* Styling fixes

* Styling pt2

* Missed a few strings in master,

* Styling fixes

* Additional master merge fixes.

* Final cleanup and adaptation to master.

* Final empty language cleanup and few string added

* Small changes to italian translation

* Disabled translation on a few components inside plugin-loader for missing react hooks.

* Fixed passing tag to translation.

* Disable debug output for reducing console spam.

* Return correct content type

* Small italian language change

* Added support for country code

* Fixed missing translation for uninstall popup.

* Fix class name shenanigans for  toast notification

* Update dependencies

* Fixed github workflow to include the new locales folder

* Update dependencies to latest version (unless it's React) and fixed the new small errors that cropped up

* Missed a file name change

* Updated dev dependencies to latest version

* Missed a few dev dependencies

* Revert "Update dependencies to latest version (unless it's React) and fixed the new small errors that cropped up"

Messed up merge with a different main branch

* Messed up deletion of rollup config.

* Fix broken pnpm lock file

* Missed a localized string during the merge

* Fixed a parameter mistake in the uninstall text parameter

* Fix pnpm random issues

* Small italian language tweaks

* Fix wrong parameter passed to the uninstall function call

* Another fix on a wrong function parameter

* Additional translation text on the store and branch selection channels

* Changed the default type passed to map to being able to index the two arrays.

* Reverted and reworked the last changes

* Distinguish events in UI for installing vs reinstalling plugins

* Additional fixes for reinstall prompt

* Revert the use of intevalPlural since the parser doesn't seem to support that.

* Missed a routing path in the backend

* Small bugfixes

* Small fixes

* Correctly adding the parameter to the request headers.

* Refactoring of the UI popup modal

* Fix pnpm shenanigans

* Final fixes for the install UI localization

* Clean up unnedeed backend code

* Small rework on text selection.

* Cleaned up parser configuration

* Removed extracttext dependency to pnpmsetup

* Merged translation and cleaned up parser

* Fixed JSON structure after manual merge.

* Added translation to the file picker

* Revert changes to PluginInstallModal

* Reworked the text modal for the final time

* Missed the proper linted text

* Missed the backend change

* Final branch cleanup

* Fixed small translation bleeding

Caused from the manual merge of _old.json files.

* fix extra space in browser.py

* fix extra newline in plugin-loader.tsx

* Cleanup i18next-parser.config.mjs

* Update plugin-loader.tsx

* Cleanup language files

* Better labeling of text

* Fixed language typos in BranchSelect

* Fixed language typos in StoreSelect

* Cleanup plugin-loader.tsx from unused imports

* Removed the path bypass since I'm using authentication from the frontend.

* Reimplemented this component as a functional component.

* Updated dependencies and lockfile

* Removed static route from main.py

Already handled in loader.py

* Small italian coherency fixes

* Fix small typography fixes on plugin name uninstall

* Fixed italian typo on removal popup

* Reenabled manual escaping value in i18next

* Set to fallback to the default language if the string in the JSON file is empty.

* Fixed pnpm wankery

* Added a missed italian text translation string

---------

Co-authored-by: AAGaming <aa@mail.catvibers.me>

frontend/src/components/settings/pages/developer/index.tsx

@@ -8,6 +8,7 @@ import {
   Toggle,
 } from 'decky-frontend-lib';
 import { useRef, useState } from 'react';
+import { useTranslation } from 'react-i18next';
 import { FaFileArchive, FaLink, FaReact, FaSteamSymbol } from 'react-icons/fa';
 
 import { setShouldConnectToReactDevTools, setShowValveInternal } from '../../../../developer';
@@ -24,8 +25,10 @@ const installFromZip = () => {
       installFromURL(url);
     } else {
       window.DeckyPluginLoader.toaster.toast({
+        //title: t('SettingsDeveloperIndex.toast_zip.title'),
         title: 'Decky',
-        body: `Installation failed! Only ZIP files are supported.`,
+        //body: t('SettingsDeveloperIndex.toast_zip.body'),
+        body: 'Installation failed! Only ZIP files are supported.',
         onClick: installFromZip,
       });
     }
@@ -38,33 +41,47 @@ export default function DeveloperSettings() {
   const [reactDevtoolsIP, setReactDevtoolsIP] = useSetting<string>('developer.rdt.ip', '');
   const [pluginURL, setPluginURL] = useState('');
   const textRef = useRef<HTMLDivElement>(null);
+  const { t } = useTranslation();
 
   return (
     <DialogBody>
       <DialogControlsSection>
-        <DialogControlsSectionHeader>Third-Party Plugins</DialogControlsSectionHeader>
-        <Field label="Install Plugin from ZIP File" icon={<FaFileArchive style={{ display: 'block' }} />}>
-          <DialogButton onClick={installFromZip}>Browse</DialogButton>
+        <DialogControlsSectionHeader>
+          {t('SettingsDeveloperIndex.third_party_plugins.header')}
+        </DialogControlsSectionHeader>
+        <Field
+          label={t('SettingsDeveloperIndex.third_party_plugins.label_zip')}
+          icon={<FaFileArchive style={{ display: 'block' }} />}
+        >
+          <DialogButton onClick={installFromZip}>
+            {t('SettingsDeveloperIndex.third_party_plugins.button_zip')}
+          </DialogButton>
         </Field>
         <Field
-          label="Install Plugin from URL"
-          description={<TextField label={'URL'} value={pluginURL} onChange={(e) => setPluginURL(e?.target.value)} />}
+          label={t('SettingsDeveloperIndex.third_party_plugins.label_url')}
+          description={
+            <TextField
+              label={t('SettingsDeveloperIndex.third_party_plugins.label_desc')}
+              value={pluginURL}
+              onChange={(e) => setPluginURL(e?.target.value)}
+            />
+          }
           icon={<FaLink style={{ display: 'block' }} />}
         >
           <DialogButton disabled={pluginURL.length == 0} onClick={() => installFromURL(pluginURL)}>
-            Install
+            {t('SettingsDeveloperIndex.third_party_plugins.button_install')}
           </DialogButton>
         </Field>
       </DialogControlsSection>
       <DialogControlsSection>
-        <DialogControlsSectionHeader>Other</DialogControlsSectionHeader>
+        <DialogControlsSectionHeader>{t('SettingsDeveloperIndex.header_other')}</DialogControlsSectionHeader>
         <RemoteDebuggingSettings />
         <Field
-          label="Enable Valve Internal"
+          label={t('SettingsDeveloperIndex.valve_internal.label')}
           description={
             <span style={{ whiteSpace: 'pre-line' }}>
-              Enables the Valve internal developer menu.{' '}
-              <span style={{ color: 'red' }}>Do not touch anything in this menu unless you know what it does.</span>
+              {t('SettingsDeveloperIndex.valve_internal.desc1')}{' '}
+              <span style={{ color: 'red' }}>{t('SettingsDeveloperIndex.valve_internal.desc2')}</span>
             </span>
           }
           icon={<FaSteamSymbol style={{ display: 'block' }} />}
@@ -78,17 +95,18 @@ export default function DeveloperSettings() {
           />
         </Field>
         <Field
-          label="Enable React DevTools"
+          label={t('SettingsDeveloperIndex.react_devtools.label')}
           description={
             <>
-              <span style={{ whiteSpace: 'pre-line' }}>
-                Enables connection to a computer running React DevTools. Changing this setting will reload Steam. Set
-                the IP address before enabling.
-              </span>
+              <span style={{ whiteSpace: 'pre-line' }}>{t('SettingsDeveloperIndex.react_devtools.desc')}</span>
               <br />
               <br />
               <div ref={textRef}>
-                <TextField label={'IP'} value={reactDevtoolsIP} onChange={(e) => setReactDevtoolsIP(e?.target.value)} />
+                <TextField
+                  label={t('SettingsDeveloperIndex.react_devtools.ip_label')}
+                  value={reactDevtoolsIP}
+                  onChange={(e) => setReactDevtoolsIP(e?.target.value)}
+                />
               </div>
             </>
           }