refactor: 全面重构腾讯云人脸识别插件

- 拆分 tencent_cloud_client.py（1311行）为 api_operations.py / image_processor.py / retry.py
- 更新 HA 废弃 API: SupportsResponse.OPTIONAL, async_unload_platforms, native_value, 移除 CONNECTION_CLASS
- 新增动态人员传感器管理（自动增/删）
- 新增 detect_face 服务定义（services.yaml）
- 移除 secret_key 持久化存储，增强安全性
- 完善错误映射前缀匹配 + 异常类型安全退避
- 修复 Coordinator 双重人员 ID 跟踪死代码
- 添加 _sanitize_error 脱敏，ImageCache LRU 缓存
- manifest.json 版本 2.1.0 + Pillow 依赖

manifest.json

@@ -6,11 +6,12 @@
   "issue_tracker": "https://code.nextrt.com/Hass/tencent_face_recognition/issues",
   "requirements": [
     "tencentcloud-sdk-python-common>=3.0.0,<4.0.0",
-    "tencentcloud-sdk-python-iai>=3.0.0,<4.0.0"
+    "tencentcloud-sdk-python-iai>=3.0.0,<4.0.0",
+    "Pillow>=10.0.0"
   ],
   "dependencies": [],
   "codeowners": ["@xyzmos"],
-  "version": "2.0.0",
+  "version": "2.1.0",
   "iot_class": "cloud_polling",
   "resources": []
 }