Fix UI inconsistencies, various improvements (#357)

* Make version gray in plugin list

* Settings/store icons together & plugin list fix

* Navigation name/icon improvements

* Decky settings overhaul and other fixes

- Revert the tab icon to a plug
- Rename DeckyFlat function to DeckyIcon
- Add DialogBody to settings pages to improve scrolling
- Add remote debugging settings to the developer settings
- Fix React devtools interactions to work more easily
- Add spacing to React devtools description
- Specify Decky vs. plugin store
- Compact version information by update button
- Add current version to bottom of settings
- Remove unnecessary settings icons
- Change CEF debugger icon to Chrome (bug icon too generic, is Chromium)
- Make buttons/dropdowns in settings have fixed width
- Make download icon act/appear similar to Valve's for Deck

* Final UI adjustments

* Switch plugin settings icon to plug

frontend/src/components/settings/pages/general/StoreSelect.tsx

@@ -16,7 +16,7 @@ const StoreSelect: FunctionComponent<{}> = () => {
   // 0 being Default, 1 being Testing and 2 being Custom
   return (
     <>
-      <Field label="Store Channel">
+      <Field label="Plugin Store Channel" childrenContainerWidth={'fixed'}>
         <Dropdown
           rgOptions={Object.values(Store)
             .filter((store) => typeof store == 'string')