[lint] Download linters from pytorch/pytorch

[clee2000]

I don't know if this is a good idea

When lintrunner was first introduced to test-infra, Sahan copied a bunch of linters from pytorch/pytorch, and I did the same later to update them, so there's a lot of dup code

This PR adds a script that downloads init scripts and lint scripts from a specific link, then runs them. Commit shas were selected to minimize difference between the existing scripts and the ones downloaded.

Pros:

• less dup code

Cons:

• confusing to track changes
• init deps and args not kept in sync
• other args not kept in sync

Alt ideas:

• use lintrunner adapters pip package (but it still has the problem about init deps and args not being provided automatically, also need to figure out a way to pip install lintrunner adapters on init, also not sure if the package is up to date)

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[huydhn]

Maybe we could look into https://github.com/justinchuby/lintrunner-adapters. ExecuTorch is getting common linters from there https://github.com/pytorch/executorch/blob/main/requirements-dev.txt#L12

[clee2000]

Maybe we could look into https://github.com/justinchuby/lintrunner-adapters. ExecuTorch is getting common linters from there https://github.com/pytorch/executorch/blob/main/requirements-dev.txt#L12

I mention this in the PR body, do you have any thoughts on the cons I list?

[huydhn]

I mention this in the PR body, do you have any thoughts on the cons I list?

It might be out of date like what you say, but I think we could actively maintain it going forward if needed. It will benefit more than one team.