feat(App): update Finlytic Flutter app UI and blocs

FinlyticApp/lib/features/search/bloc/search_event.dart

@@ -0,0 +1,17 @@
+import 'package:equatable/equatable.dart';
+
+abstract class SearchEvent extends Equatable {
+  const SearchEvent();
+
+  @override
+  List<Object?> get props => [];
+}
+
+class SearchQueryChanged extends SearchEvent {
+  final String query;
+
+  const SearchQueryChanged(this.query);
+
+  @override
+  List<Object?> get props => [query];
+}