fix: LaserTimerMinutes持久化存储到Flash

1. AppPara_T新增LaserTimerMinutes字段,上电从Flash加载
2. 首次使用默认10分钟,laser time修改后SAVE_APP_PARA保存
3. 断电重启后保留上次设定值

Module/LaserTracing_Debug/UartDebug.c

@@ -785,6 +785,8 @@ static void DebugLaserConfig(int argc, char *argv[])
 			return;
 		}
 		SGCP.LaserTimerMinutes = (uint8_t)min;
+		App.Para.LaserTimerMinutes = (uint8_t)min;
+		SAVE_APP_PARA((uint32_t *)&App.Para);
 		DBG_LOG("Laser timer set to %d minute(s).\r\n", SGCP.LaserTimerMinutes);
 	}
 }