Improve init. Close #236

lib/foundation/app.dart

@@ -77,10 +77,15 @@ class _App {
   Future<void> init() async {
     cachePath = (await getApplicationCacheDirectory()).path;
     dataPath = (await getApplicationSupportDirectory()).path;
-    await data.init();
-    await history.init();
-    await favorites.init();
-    await local.init();
+  }
+
+  Future<void> initComponents() async {
+    await Future.wait([
+      data.init(),
+      history.init(),
+      favorites.init(),
+      local.init(),
+    ]);
   }
 
   Function? _forceRebuildHandler;