feat(global-favorites): implement global favorites feature with drag-and-drop support

- Added GlobalFavoritesListComponent to manage and display favorite channels.
- Created GlobalFavoritesPageComponent to serve as the main page for global favorites.
- Implemented loading and displaying of EPG data for channels.
- Introduced GlobalFavoritesService to handle fetching, removing, and reordering favorites from various sources (M3U, Xtream, Stalker).
- Enhanced unified favorite channel interface to support new features and data structures.
- Added necessary HTML and SCSS for the global favorites page layout and styling.
- Updated database schema to include position column for favorites to support ordering.
- Added typings for new database operations related to global favorites.

apps/electron-backend/src/app/api/main.preload.ts

@@ -295,6 +295,9 @@ contextBridge.exposeInMainWorld('electron', {
     dbGetFavorites: (playlistId: string) =>
         ipcRenderer.invoke('DB_GET_FAVORITES', playlistId),
     dbGetGlobalFavorites: () => ipcRenderer.invoke('DB_GET_GLOBAL_FAVORITES'),
+    dbReorderGlobalFavorites: (
+        updates: { content_id: number; position: number }[]
+    ) => ipcRenderer.invoke('DB_REORDER_GLOBAL_FAVORITES', updates),
     // Recently viewed (playlist-specific)
     dbGetRecentItems: (playlistId: string) =>
         ipcRenderer.invoke('DB_GET_RECENT_ITEMS', playlistId),