Refactor ASR module and remove deprecated AliAsrServer

- Introduced AsrRelatime class for real-time ASR using WebSocket.
- Removed AliAsrServer and related files from the aliyun provider.
- Updated base class for ASR to use WSServer for WebSocket connections.
- Added new test cases for the updated ASR functionality.
- Cleaned up unused imports and files across the project.
- Adjusted TypeScript configuration for better module resolution.
- Implemented silence generation for audio streaming.

src/asr/provider/aliyun/nls/readme.md

@@ -0,0 +1 @@
+通过access_id和access_key_secret使用阿里云智能语音服务进行语音识别。