feat ：init

src/main/java/com/xiaozhi/communication/domain/DeviceMcpMessage.java

@@ -0,0 +1,20 @@
+package com.xiaozhi.communication.domain;
+
+import com.xiaozhi.communication.domain.mcp.device.DeviceMcpPayload;
+import lombok.Data;
+import lombok.EqualsAndHashCode;
+
+/**
+ * MCP请求类，用于处理向设备发送相关的MCP请求
+ */
+@Data
+@EqualsAndHashCode(callSuper = true)
+public final  class DeviceMcpMessage extends Message {
+    public DeviceMcpMessage() {
+        super("mcp");
+    }
+
+    private String sessionId;//会话id
+    private String type = "mcp";
+    private DeviceMcpPayload payload;
+}