feat(hass): 新增小爱音箱接入 Home Assistant Assist 的完整示例

- 新增完整的 Home Assistant 集成示例，支持文本对话与上下文会话
- 实现小爱音箱事件解析与 TTS 播报，支持实时打断功能
- 添加连续会话管理，支持区域上下文注入和会话超时结束
- 提供完整的配置系统、类型定义和错误处理
- 包含 Rust 扩展模块用于小爱音箱通信，支持音频流处理
- 添加单元测试、集成测试脚本和 Docker 部署支持
- 提供详细的使用文档和配置说明

examples/hass/Cargo.toml

@@ -0,0 +1,18 @@
+[package]
+name = "open_xiaoai_server"
+version = "1.0.0"
+edition = "2021"
+
+[lib]
+name = "open_xiaoai_server"
+crate-type = ["cdylib"]
+
+[dependencies]
+pyo3 = { version = "0.24.0", features = ["extension-module", "abi3-py38"] }
+pyo3-async-runtimes = { version = "0.24", features = ["attributes", "tokio-runtime"] }
+open-xiaoai = { path = "../../packages/client-rust" }
+tokio = { version = "1.32.0", features = ["full"] }
+tokio-tungstenite = "0.26.2"
+serde = { version = "1.0", features = ["derive"] }
+serde_json = "1.0"
+