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_storage/pubspec.yaml

@@ -12,13 +12,13 @@ resolution: workspace
 # 连带收益：去掉 drift_dev 后 melos 可以留在 8.x（drift_dev 2.34.0 依赖
 # cli_util ^0.4.0，与 melos 8 的 ^0.5.0 互斥）。详见 SCAFFOLD-NOTES.md §A。
 environment:
-  sdk: ^3.12.0
+  sdk: ^3.11.0
 
 dependencies:
   core_foundation: ^0.1.0
   flutter:
     sdk: flutter
-  flutter_riverpod: ^3.3.2
+  flutter_riverpod: 3.2.1
   shared_preferences: ^2.5.5
 
 dev_dependencies: