ar_thr
* Making `ar_thr` available as a hyperparameter * Disabling ar_thr as hyperparameter and computing from the dataset instead * Fixing bug in ar_thr computation * Fix `ar_thr` to 100
check_git_status()
ROOT
* Updating check_git_status() to switch to the repository root before performing git ops * More pythonic * Linting * Remove redundant Path() call * Generalizing the context manager * Fixing error in context manager * Cleanup * Change to decorator Co-authored-by: Glenn Jocher <glenn.jocher@ultralytics.com>