Initial commit: M20 Gamepad control app

山猫 M20 四足机器人手柄控制 Android App，使用 UDP + JSON 协议控制机器人运动。

- 协议层：16 字节小端 Header + JSON ASDU 编解码
- 网络层：UDP 客户端，心跳 1Hz，断线检测 3s
- 连接状态机：空闲/连接中/已连接/断线 + 运动状态机：空闲/站立/RL 控制
- 虚拟摇杆：Compose 原生摇杆库，angle/power -> X/Y/Yaw 映射
- 视频播放：Media3 ExoPlayer RTSP，支持 AUTO/FORCE_HW/FORCE_SW_H264/FORCE_SW_H265
- 设置界面：机器人 IP/端口、RTSP 地址、编码器选择，DataStore 持久化
- 状态面板：异常列表、运控状态、设备温度、电池信息
- 控制按钮：模式/步态/照明/充电/休眠

Generated by Mistral Vibe.
Co-Authored-By: Mistral Vibe <vibe@mistral.ai>

gradle/gradle-daemon-jvm.properties

@@ -0,0 +1,12 @@
+#This file is generated by updateDaemonJvm
+toolchainUrl.FREE_BSD.AARCH64=https\://api.foojay.io/disco/v3.0/ids/ec7520a1e057cd116f9544c42142a16b/redirect
+toolchainUrl.FREE_BSD.X86_64=https\://api.foojay.io/disco/v3.0/ids/4c4f879899012ff0a8b2e2117df03b0e/redirect
+toolchainUrl.LINUX.AARCH64=https\://api.foojay.io/disco/v3.0/ids/ec7520a1e057cd116f9544c42142a16b/redirect
+toolchainUrl.LINUX.X86_64=https\://api.foojay.io/disco/v3.0/ids/4c4f879899012ff0a8b2e2117df03b0e/redirect
+toolchainUrl.MAC_OS.AARCH64=https\://api.foojay.io/disco/v3.0/ids/73bcfb608d1fde9fb62e462f834a3299/redirect
+toolchainUrl.MAC_OS.X86_64=https\://api.foojay.io/disco/v3.0/ids/846ee0d876d26a26f37aa1ce8de73224/redirect
+toolchainUrl.UNIX.AARCH64=https\://api.foojay.io/disco/v3.0/ids/ec7520a1e057cd116f9544c42142a16b/redirect
+toolchainUrl.UNIX.X86_64=https\://api.foojay.io/disco/v3.0/ids/4c4f879899012ff0a8b2e2117df03b0e/redirect
+toolchainUrl.WINDOWS.AARCH64=https\://api.foojay.io/disco/v3.0/ids/9482ddec596298c84656d31d16652665/redirect
+toolchainUrl.WINDOWS.X86_64=https\://api.foojay.io/disco/v3.0/ids/39701d92e1756bb2f141eb67cd4c660e/redirect
+toolchainVersion=21