feat(bloc): add a lot of docs, fix onWrap, and add repo provider

packages/wyatt_bloc_helper/example/test/widget_test.dart

@@ -5,15 +5,14 @@
 // gestures. You can also use WidgetTester to find child widgets in the widget
 // tree, read text, and verify that the values of widget properties are correct.
 
+import 'package:bloc_helper_example/counter_repository_provider_page.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-import 'package:bloc_helper_example/main.dart';
-
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
     // Build our app and trigger a frame.
-    await tester.pumpWidget(const MyApp());
+    await tester.pumpWidget(const CounterRepositoryProviderPage());
 
     // Verify that our counter starts at 0.
     expect(find.text('0'), findsOneWidget);