Include training pipeline into this repository

[rland93]

Would like to integrate the training / data generation script into this repository to centralize it, because development on the training pipeline is ongoing.

[rland93]

I'm going to deal with dependencies by putting a separate requirements.txt file in the training folder, so that people can create a virtual env (with conda or pyenv or poetry or whatever) to run training.

[rland93]

It will be helpful, if you are making training code that requires complex software dependencies, to add some pages into https://github.com/uci-uav-forge/odcl/tree/core-dev/docs !