feat: Add build info and localization for entry app

- Introduced buildinfo.json5 to enable impeller feature.
- Added Chinese localization strings in string.json for module description and entry ability.
- Created Ability.test.ets for unit testing of ability functionalities.
- Implemented List.test.ets to run the ability tests.
- Developed TestAbility.ets to manage test execution and lifecycle events.
- Created Index.ets as a testability page with UI components.
- Added OpenHarmonyTestRunner.ts for managing test execution in OpenHarmony.
- Defined module.json5 for entry_test module configuration.
- Established color.json and string.json for base resources.
- Included icon.png for the test module.
- Created test_pages.json to define testability page sources.
- Configured hvigor and oh-package.json5 for project setup.
- Updated pubspec.yaml and related files to downgrade Dart SDK to 3.11.0 and adjust dependencies.
- Added PowerShell script to enable OpenHarmony Flutter toolchain.
- Updated multiple package pubspec.yaml files to align with Dart SDK version 3.11.0 and adjust dependencies accordingly.

packages/core_auth/pubspec.yaml

@@ -11,16 +11,18 @@ resolution: workspace
 # 因此本包里的 token 刷新用的是一个**不带任何拦截器的裸 Dio**。
 # ---------------------------------------------------------------------------
 environment:
-  sdk: ^3.12.0
+  sdk: ^3.11.0
 
 dependencies:
   core_foundation: ^0.1.0
   dio: ^5.11.0
   flutter:
     sdk: flutter
-  flutter_riverpod: ^3.3.2
+  flutter_riverpod: 3.2.1
   flutter_secure_storage: ^11.0.0
-  riverpod_annotation: ^4.0.3
+  # 4.0.3+ 的 generator 引入 analyzer ^12，要求 meta ^1.18；
+  # Harmony Flutter（Dart 3.11）固定 meta 1.17.0，故保持在兼容组合。
+  riverpod_annotation: 4.0.2
 
 dev_dependencies:
   build_runner: ^2.4.13
@@ -28,4 +30,4 @@ dev_dependencies:
   flutter_test:
     sdk: flutter
   mocktail: ^1.0.5
-  riverpod_generator: ^4.0.4
+  riverpod_generator: 4.0.3