feat: Add --lint-all-files option

[victor-xplore]

Add a --lint-all-files cmd line option to run lint-staged on all files tracked by git

Fixes #889

[victor-xplore]

Integration tests fail, seems to be same issue as in #906 (comment)

[iiroj]

Hello,

Thanks for the PR! Unfortunately, this has already been discussed and I feel it is not in lint-staged's DNA to add support for this.

However, there's (slow) work on allowing use of adapters, mostly for other VCS, that would allow this.

I'll close this PR for now.

[victor-xplore]

@iiroj Hi, thank you for having a look, I didn't see any discussion but I guess the feature request I saw could be a duplicate.

While it does goes against the project name, I do find it really useful. Eg when introducing lint-staged to a repository it's nice to make sure all files validate, when working with people who skip the hooks it's nice to validate that the repository is still valid and to run on pull requests to make sure hooks aren't skipped. I guess I'll just have to maintain my own fork for now then.

[iiroj]

Sorry about that. Let me reiterate: I'd like to refactor lint-staged to support generic adapters, like --adapter git or adapter --adapter mercurial. After this, we can ship with a default --adapter git-all-tracked-files or something like that, that will do what you want but keep the internals more clean.

[iiroj]

Related #892