feat: 集成 LiveKit 视频通话与状态指示器

- 添加 LiveKit SDK 依赖及 JitPack 仓库
- 新增 LiveKit 配置界面（URL、房间、Token、自动连接开关）
- 实现 LiveKitManager 管理连接状态
- 在 MainActivity 中动态生成 Token 并处理权限申请
- 添加状态指示器（statusIndicator）实时显示 MQTT/LiveKit 连接状态
- 新增监控脚本 monitor.py 用于远程查看视频流
- 更新版本号至 2603131822

gradle/libs.versions.toml

@@ -8,6 +8,7 @@ espressoCore = "3.7.0"
 appcompat = "1.7.1"
 material = "1.13.0"
 emoji2-views = "1.5.0"
+livekit = "2.23.5"
 
 [libraries]
 androidx-core-ktx = { group = "androidx.core", name = "core-ktx", version.ref = "coreKtx" }
@@ -17,9 +18,9 @@ androidx-espresso-core = { group = "androidx.test.espresso", name = "espresso-co
 androidx-appcompat = { group = "androidx.appcompat", name = "appcompat", version.ref = "appcompat" }
 material = { group = "com.google.android.material", name = "material", version.ref = "material" }
 androidx-emoji2-views = { group = "androidx.emoji2", name = "emoji2-views", version.ref = "emoji2-views" }
+livekit-android = { group = "io.livekit", name = "livekit-android", version.ref = "livekit" }
 
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }
 kotlin-android = { id = "org.jetbrains.kotlin.android", version.ref = "kotlin" }
-