feat: 添加 RustDesk 协议支持和项目文档

- 新增 RustDesk 模块，支持与 RustDesk 客户端连接
  - 实现会合服务器协议和 P2P 连接
  - 支持 NaCl 加密和密钥交换
  - 添加视频帧和 HID 事件适配器
- 添加 Protobuf 协议定义 (message.proto, rendezvous.proto)
- 新增完整项目文档
  - 各功能模块文档 (video, hid, msd, otg, webrtc 等)
  - hwcodec 和 RustDesk 协议技术报告
  - 系统架构和技术栈文档
- 更新 Web 前端 RustDesk 配置界面和 API

web/src/i18n/en-US.ts

@@ -604,6 +604,7 @@ export default {
     available: 'Available',
     unavailable: 'Unavailable',
     running: 'Running',
+    starting: 'Starting',
     stopped: 'Stopped',
     failed: 'Failed',
     start: 'Start',
@@ -641,6 +642,41 @@ export default {
       virtualIp: 'Virtual IP',
       virtualIpHint: 'Leave empty for DHCP, or specify with CIDR (e.g., 10.0.0.1/24)',
     },
+    // rustdesk
+    rustdesk: {
+      title: 'RustDesk Remote',
+      desc: 'Remote access via RustDesk client',
+      serverSettings: 'Server Settings',
+      rendezvousServer: 'ID Server',
+      rendezvousServerPlaceholder: 'hbbs.example.com:21116',
+      rendezvousServerHint: 'RustDesk ID server address (required)',
+      relayServer: 'Relay Server',
+      relayServerPlaceholder: 'hbbr.example.com:21117',
+      relayServerHint: 'Relay server address, auto-derived from ID server if empty',
+      deviceInfo: 'Device Info',
+      deviceId: 'Device ID',
+      deviceIdHint: 'Use this ID in RustDesk client to connect',
+      devicePassword: 'Device Password',
+      showPassword: 'Show Password',
+      hidePassword: 'Hide Password',
+      regenerateId: 'Regenerate ID',
+      regeneratePassword: 'Regenerate Password',
+      confirmRegenerateId: 'Are you sure you want to regenerate the device ID? Existing clients will need to reconnect with the new ID.',
+      confirmRegeneratePassword: 'Are you sure you want to regenerate the password? Existing clients will need to reconnect with the new password.',
+      serviceStatus: 'Service Status',
+      rendezvousStatus: 'Registration Status',
+      registered: 'Registered',
+      connected: 'Connected',
+      disconnected: 'Disconnected',
+      connecting: 'Connecting',
+      notConfigured: 'Not Configured',
+      notInitialized: 'Not Initialized',
+      copyId: 'Copy ID',
+      copyPassword: 'Copy Password',
+      copied: 'Copied',
+      keypairGenerated: 'Keypair Generated',
+      noKeypair: 'No Keypair',
+    },
   },
   stats: {
     title: 'Connection Stats',