NiusIMU 0.3.0

Highlights

• Adds Arduino-style drivers and examples for BMI088, BMI160, BMI270, BMI323, BMX055, BNO055/BNO085/BNO086, ICM-20602/20689/20948/42688-P/45686, LSM303/LSM6/LSM9 families, QMI8658, QMC6309, and common marketplace boards.
• Organizes same-core pin variants around one sensor header, with exact photographed silks and wiring guidance in docs/IMU_SUPPORT.md.
• Adds one GY601N1 facade that auto-detects ICM-42688-P, ICM-45686, and BMI323 populations across the shared carrier pinout.
• Exposes the complete official ST LSM6DSV320X register API through stContext(), alongside focused FIFO, SFLP, high-g, FSM/MLC/ASC, EIS/OIS, embedded-event, and I3C/IBI examples.
• Expands GPIO, auxiliary-bus, fusion, and manual calibration workflows, including BNO055 and BNO08x guided calibration.
• Refreshes the README and public support guide, with 148 examples compiled against ArduinoNRF nRF52840.

Validation

• All 148 sketches compile for arduinonrf:nrf52:promicro_nrf52840.
• Arduino Lint 1.3.0 strict Library Manager update checks pass with zero errors and zero warnings.