migrate MWE to documentation with extracted lines using mkdocs-snippets

example: https://github.com/usatlas/af-benchmarking/blob/feat/parsing/MWE/UC/mwe_truth3.sh is a subset of liens from https://github.com/usatlas/af-benchmarking/blob/feat/parsing/TRUTH3/UC/Native/run_truth3_native_batch.sh

Same for [ExampleFiles](https://github.com/usatlas/af-benchmarking/tree/feat/parsing/ExampleFiles)