Rename genui_a2ui package to genui_a2a (#774)

* Rename genui_a2ui to genui_a2a

* Fixing migration steps

Author: gspencergoog

CONTRIBUTING.md

@@ -8,7 +8,7 @@ import 'dart:io';
 import 'package:device_info_plus/device_info_plus.dart';
 import 'package:flutter/foundation.dart';
 import 'package:genui/genui.dart';
-import 'package:genui_a2ui/genui_a2ui.dart';
+import 'package:genui_a2a/genui_a2a.dart';
 import 'package:riverpod_annotation/riverpod_annotation.dart';
 
 import '../../core/logging.dart';

README.md

@@ -21,7 +21,7 @@ dependencies:
   flutter_riverpod: ^3.1.0
   flutter_svg: ^2.2.2
   genui: ^0.7.0
-  genui_a2ui: ^0.7.0
+  genui_a2a: ^0.7.0
   go_router: ^17.0.0
   image_picker: ^1.2.0
   logging: ^1.3.0