Add Volcengine support for TTS and ASR services

- Introduced Volcengine as a new provider for both TTS and ASR services.
- Updated configuration files to include Volcengine-specific parameters such as app_id, resource_id, and uid.
- Enhanced the ASR service to support streaming mode with Volcengine's API.
- Modified existing tests to validate the integration of Volcengine services.
- Updated documentation to reflect the addition of Volcengine as a supported provider for TTS and ASR.
- Refactored service factory to accommodate Volcengine alongside existing providers.

engine/runtime/ports/asr.py

@@ -3,7 +3,7 @@
 from __future__ import annotations
 
 from dataclasses import dataclass
-from typing import AsyncIterator, Awaitable, Callable, Literal, Optional, Protocol
+from typing import Any, AsyncIterator, Awaitable, Callable, Dict, Literal, Optional, Protocol
 
 from providers.common.base import ASRResult
 
@@ -22,6 +22,11 @@ class ASRServiceSpec:
     api_key: Optional[str] = None
     api_url: Optional[str] = None
     model: Optional[str] = None
+    app_id: Optional[str] = None
+    resource_id: Optional[str] = None
+    cluster: Optional[str] = None
+    uid: Optional[str] = None
+    request_params: Optional[Dict[str, Any]] = None
     enable_interim: bool = False
     interim_interval_ms: int = 500
     min_audio_for_interim_ms: int = 300