basic patch notes viewer, lazy-load settings and store, build frontend as esmodule, add lazy-loaded react-markdown, backend changes to accomodate ESModule frontend

frontend/src/plugin-loader.tsx

@@ -1,4 +1,5 @@
-import { ModalRoot, QuickAccessTab, Router, showModal, sleep, staticClasses } from 'decky-frontend-lib';
+import { ModalRoot, QuickAccessTab, Router, SteamSpinner, showModal, sleep, staticClasses } from 'decky-frontend-lib';
+import { Suspense, lazy } from 'react';
 import { FaPlug } from 'react-icons/fa';
 
 import { DeckyState, DeckyStateContextProvider, useDeckyState } from './components/DeckyState';
@@ -6,8 +7,6 @@ import LegacyPlugin from './components/LegacyPlugin';
 import PluginInstallModal from './components/modals/PluginInstallModal';
 import NotificationBadge from './components/NotificationBadge';
 import PluginView from './components/PluginView';
-import SettingsPage from './components/settings';
-import StorePage from './components/store/Store';
 import TitleView from './components/TitleView';
 import Logger from './logger';
 import { Plugin } from './plugin';
@@ -61,11 +60,44 @@ class PluginLoader extends Logger {
       ),
     });
 
-    this.routerHook.addRoute('/decky/store', () => <StorePage />);
+    const StorePage = lazy(() => import('./components/store/Store'));
+    const SettingsPage = lazy(() => import('./components/settings'));
+
+    this.routerHook.addRoute('/decky/store', () => (
+      <Suspense
+        fallback={
+          <div
+            style={{
+              marginTop: '40px',
+              height: 'calc( 100% - 40px )',
+              overflowY: 'scroll',
+            }}
+          >
+            <SteamSpinner />
+          </div>
+        }
+      >
+        <StorePage />
+      </Suspense>
+    ));
     this.routerHook.addRoute('/decky/settings', () => {
       return (
         <DeckyStateContextProvider deckyState={this.deckyState}>
-          <SettingsPage />
+          <Suspense
+            fallback={
+              <div
+                style={{
+                  marginTop: '40px',
+                  height: 'calc( 100% - 40px )',
+                  overflowY: 'scroll',
+                }}
+              >
+                <SteamSpinner />
+              </div>
+            }
+          >
+            <SettingsPage />
+          </Suspense>
         </DeckyStateContextProvider>
       );
     });