lidar ins extrinsic calibration

[pedestrain123]

hello ,if i want to calib the extrinsic of lidar and gnss/ins ,can you have a good method to calib it?

[github-actions]

Sorry!! We are reducing the support for fast_gicp. Please consider using small_gicp, a new faster library with better portability. Meanwhile, feel free to open a PR if you have any improvements that can be merged into fast_gicp.