refactor: rename opencv module to master_machine, remove old master_process

- Delete modules/master_machine/ (old seasky protocol vision module)
- Rename modules/opencv/ → modules/master_machine/
- Rename opencv.h/c → master_machine.h/c
- Remove master_process.h include from robot_def.h and ins_task.c
- Remove VisionSetAltitude() call from ins_task.c (send not needed)
- Update all #include paths and CMakeLists.txt

application/robot_def.h

@@ -3,7 +3,6 @@
 #define ROBOT_DEF_H
 
 #include "ins_task.h"
-#include "master_process.h"
 #include "stdint.h"
 
 /* 开发板类型定义 */