Add robot gimbal position push topic

include/message.h

@@ -312,6 +312,16 @@ struct PACKED PushPeriodMsg {
             float y;
             float z;
         } position;
+        struct {
+            uint16_t yaw_ground;
+            uint16_t pitch_ground;
+            uint16_t yaw;
+            uint16_t pitch;
+            struct {
+                uint8_t option_mode : 2;
+                uint8_t return_center : 1;
+            };
+        } gimbal;
     };
     struct Footer footer;
 };