wip basics for bloc based state management

lib/state/app/application/marianumMessage/marianum_message_controller.dart

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+import '../../../infrastructure/controller.dart';
+import '../../../infrastructure/loadable_state.dart';
+import 'marianum_message_state.dart';
+
+class MarianumMessageController extends Controller<LoadableState<MarianumMessageState>> {
+  MarianumMessageController() : super(const LoadableState(loadingState: LoadingState.none, data: MarianumMessageState(test: [])));
+
+  void loading() {
+    emit(state.loading());
+    Future.delayed(const Duration(seconds: 3)).then((value) => emit(state.done(const MarianumMessageState(test: []))));
+  }
+  
+  void backgroundLoading() {
+    emit(state.cached(const MarianumMessageState(test: [])));
+  }
+
+  void done() {
+    emit(state.done(const MarianumMessageState(test: [])));
+  }
+
+  void error() {
+
+  }
+}