New hook: order plain files like .gitignore, .Rbuildignore

[lorenzwalthert]

Maybe this should not be a language: r hook as the scope is beyond R users alone.

[lorenzwalthert]

You can use file-contents-sorter from https://pre-commit.com/hooks.html. Maybe adding this to the template? Also seems like ! expression must come last, so alphabetical ordering might not be a good idea... https://stackoverflow.com/questions/5533050/gitignore-exclude-folder-but-include-specific-subfolder

[lorenzwalthert]

https://github.com/lorenzwalthert/gitignore-tidy for gitignore, maybe to include in template.
can use a hook from pre-commit/pre-commit-hooks to order.