revamp on bloc approach

lib/state/app/modules/app_modules.dart

@@ -0,0 +1,29 @@
+import 'package:flutter/material.dart';
+
+import '../../../view/pages/files/files.dart';
+import '../../../view/pages/talk/chatList.dart';
+import '../../../view/pages/timetable/timetable.dart';
+
+class AppModule {
+  String name;
+  IconData icon;
+  Widget Function() create;
+
+  AppModule(this.name, this.icon, this.create);
+
+  static Map<Module, AppModule> modules() => {
+    Module.timetable: AppModule('Vertretung', Icons.calendar_month, Timetable.new),
+    Module.talk: AppModule('Talk', Icons.chat, ChatList.new),
+    Module.files: AppModule('Files', Icons.folder, Files.new),
+  };
+}
+
+enum Module {
+  timetable,
+  talk,
+  files,
+  marianumMessage,
+  roomPlan,
+  gradeAveragesCalculator,
+  holidays,
+}