android: Move game deserialization to another thread

Deserializing games from the cache in shared preferences was done on the main thread and could cause a stutter on startup.

src/android/app/src/main/java/org/yuzu/yuzu_emu/model/GamesViewModel.kt

@@ -49,6 +49,9 @@ class GamesViewModel : ViewModel() {
         // Retrieve list of cached games
         val storedGames = PreferenceManager.getDefaultSharedPreferences(YuzuApplication.appContext)
             .getStringSet(GameHelper.KEY_GAMES, emptySet())
+
+        viewModelScope.launch {
+            withContext(Dispatchers.IO) {
                 if (storedGames!!.isNotEmpty()) {
                     val deserializedGames = mutableSetOf<Game>()
                     storedGames.forEach {
@@ -60,8 +63,10 @@ class GamesViewModel : ViewModel() {
                         }
 
                         val gameExists =
-                    DocumentFile.fromSingleUri(YuzuApplication.appContext, Uri.parse(game.path))
-                        ?.exists()
+                            DocumentFile.fromSingleUri(
+                                YuzuApplication.appContext,
+                                Uri.parse(game.path)
+                            )?.exists()
                         if (gameExists == true) {
                             deserializedGames.add(game)
                         }
@@ -70,6 +75,8 @@ class GamesViewModel : ViewModel() {
                 }
                 reloadGames(false)
             }
+        }
+    }
 
     fun setGames(games: List<Game>) {
         val sortedList = games.sortedWith(