cleanup: remove unused motor drivers and simplify motor_def.h

- Remove DJImotor, HTmotor, LKmotor, step_motor, servo_motor directories
- Remove Motor_Control_Setting_s and related enums (Closeloop_Type_e,
  Feedback_Source_e, Feedfoward_Type_e, MOTOR_SEND_MODE_e, Motor_Working_Type_e)
- Merge motor_reverse_flag and feedback_reverse_flag into output_reverse
- Hardcode DM motor control: IMU angle feedback → angle PID → velocity output
- Simplify Motor_Init_Config_s to only: PID params, output_reverse, motor_type, CAN config

modules/motor/DMmotor/dmmotor.h

@@ -48,16 +48,16 @@ typedef struct
 typedef struct
 {
     DM_Motor_Measure_s measure;
-    Motor_Control_Setting_s motor_settings;
     Motor_Controller_s motor_controller;
 
     CANInstance *motor_can_instance;  // CAN communication instance
     DaemonInstance *motor_daemon;     // daemon watchdog
-    DM_Motor_Mode_e ctrl_mode; // current control mode (MIT / Pos-Vel / Velocity)
-    float mit_kp;              // MIT mode KP (motor internal position gain, 0~500)
-    float mit_kd;              // MIT mode KD (motor internal velocity gain, 0~5)
+    Output_Reverse_Flag_e output_reverse; // output reverse flag
+    DM_Motor_Mode_e ctrl_mode;        // current control mode (MIT / Pos-Vel / Velocity)
+    float mit_kp;                     // MIT mode KP (motor internal position gain, 0~500)
+    float mit_kd;                     // MIT mode KD (motor internal velocity gain, 0~5)
 
-    float pid_ref;             // reference input from application
+    float pid_ref;                    // reference input from application
 } DMMotorInstance;
 
 /* DM motor init config */
@@ -83,7 +83,6 @@ typedef enum
 DMMotorInstance *DMMotorInit(DM_Motor_Init_Config_s *config);
 
 void DMMotorSetRef(DMMotorInstance *motor, float ref);
-void DMMotorOuterLoop(DMMotorInstance *motor, Closeloop_Type_e type);
 void DMMotorSetCtrlMode(DMMotorInstance *motor, DM_Motor_Mode_e mode);
 void DMMotorSetMode(DMMotor_Mode_e mode, DMMotorInstance *motor);