add search fragment

lib/bloc/scoop_search_bloc.dart

@@ -0,0 +1,32 @@
+import 'package:bloc/bloc.dart';
+import 'package:bloc_concurrency/bloc_concurrency.dart';
+import 'package:equatable/equatable.dart';
+
+import '../models/scoop_app_model.dart';
+import '../utils/scoop_utils.dart';
+
+part 'scoop_search_event.dart';
+part 'scoop_search_state.dart';
+
+class ScoopSearchBloc extends Bloc<ScoopSearchEvent, ScoopSearchState> {
+  ScoopSearchBloc() : super(ScoopSearchInitial()) {
+    on<ScoopSearchQueryChanged>(
+      (event, emit) async {
+        emit(ScoopSearchLoading());
+
+        try {
+          Map<String, List<ScoopAppModel>> data = {};
+          if (event.query.isEmpty) {
+            data = await getAllInstallableApps();
+          } else {
+            data = await searchInstallableApps(event.query);
+          }
+          emit(ScoopSearchLoaded(data));
+        } catch (e) {
+          emit(ScoopSearchError(e.toString()));
+        }
+      },
+      transformer: restartable(),
+    );
+  }
+}