feat: add IMU Python package with pybind11 bindings

- Add dm_imu_pkg/__init__.py to dynamically load compiled IMU module during development and installation
- Update .vscode/settings.json to ignore missing CMakeLists for flexible builds
- Generate egg-info metadata and package structure for distribution

src/dm_imu/imu_driver.h

@@ -0,0 +1,103 @@
+#ifndef _IMU_DRIVER_H_
+#define _IMU_DRIVER_H_
+#include <iostream>
+#include <thread>
+#include <initializer_list>
+#include <fstream>
+#include <array>
+#include <mutex>
+#include <atomic>
+#include <math.h>
+#include "bsp_crc.h"
+
+namespace dmbot_serial
+{
+#pragma pack(1)
+typedef struct
+{
+    uint8_t FrameHeader1;
+    uint8_t flag1;
+    uint8_t slave_id1;
+    uint8_t reg_acc;
+    uint32_t accx_u32;
+    uint32_t accy_u32;
+    uint32_t accz_u32;
+    uint16_t crc1;
+    uint8_t FrameEnd1;
+
+    uint8_t FrameHeader2;
+    uint8_t flag2;
+    uint8_t slave_id2;
+    uint8_t reg_gyro;
+    uint32_t gyrox_u32;
+    uint32_t gyroy_u32;
+    uint32_t gyroz_u32;
+    uint16_t crc2;
+    uint8_t FrameEnd2;
+
+    uint8_t FrameHeader3;
+    uint8_t flag3;
+    uint8_t slave_id3;
+    uint8_t reg_euler; // r-p-y
+    uint32_t roll_u32;
+    uint32_t pitch_u32;
+    uint32_t yaw_u32;
+    uint16_t crc3;
+    uint8_t FrameEnd3;
+} IMU_Receive_Frame;
+#pragma pack()
+
+typedef struct
+{
+    float accx;
+    float accy;
+    float accz;
+    float gyrox;
+    float gyroy;
+    float gyroz;
+    float roll;
+    float pitch;
+    float yaw;
+} IMU_Data;
+
+class DmImu
+{
+public:
+    DmImu(const std::string& port = "/dev/ttyACM1", int baud = 921600);
+    ~DmImu();
+
+    // Start data acquisition thread; returns true on success
+    bool start();
+    // Stop acquisition and close serial port
+    void stop();
+
+    // Get latest IMU data (thread‑safe copy)
+    IMU_Data getData() const;
+
+private:
+    void init_imu_serial();
+    void get_imu_data_thread();
+
+    void enter_setting_mode();
+    void turn_on_accel();
+    void turn_on_gyro();
+    void turn_on_euler();
+    void turn_off_quat();
+    void set_output_1000HZ();
+    void save_imu_para();
+    void exit_setting_mode();
+    void restart_imu();
+
+    int imu_seial_baud;
+    std::string imu_serial_port;
+    int serial_fd = -1;
+    std::thread rec_thread;
+    mutable std::mutex data_mutex;
+    bool stop_thread_ = false;
+
+    IMU_Receive_Frame receive_data{};
+    IMU_Data data{};
+};
+
+}
+#endif