[Feature-Request] Multi-cam calibration

[Erol444]

Start with the why:

We first need multi-cam extrinsics calibration script in order to develop demos like:

• Multi-cam pointcloud alignment/fusion
• Multi-cam image stitching
• Multiple OAK cam stereo vision

Move to the what:

Develop a calibration script that would estimate camera extrinsics (translation/orientation of one cam based to the other). I believe our calibration.py script already does something similar with the help of charuco board, so that would be worth investigating. Also investigate using target-free calibration, eg. using LoFTR and using multiple sensors on the OAK camera.