Ditch Git Checkout: Use Git Switch and Git Restore Instead

Git 2.23 introduced `git switch` and `git restore` to replace `git checkout` for improved clarity and functionality. `git switch` handles branch switching, while `git restore` is used to restore working tree files, aligning with the UNIX philosophy of performing a single function well. These commands offer more explicit semantics, making them easier to understand and less confusing than the all-encompassing `git checkout`.