Add a flag to order output by filename, line number?

[samiam2013]

I was just checking a PR in that big codebase I needed this linter for and in lieu of actually fixing everything that gets flagged I was using a version of diff to get the changes between my branch <-> main and I noticed that the diff was not the set of neat changes it could be if things were listed in an order.

Adding a buffer and sorting it at the end shoudln't be expensive but that never means it won't be so I think this feature should be behind a flag where it won't break existing use and won't slow anyone down if they don't need it.