feat: Script to check for outdated tree-sitter grammars

[NikitaRevenco]

This is a new script for xtask which will check if each grammar is outdated or not. For github links it also provides a link to a diff.

retrieves a remote's latest commit with git ls-remote and compares it against the commit that we have.

Usage:

cargo xtask grammar-check

Screenshot:

[David-Else]

How about if you are pinning to a release tag rather than using the latest commit?

[NikitaRevenco]

How about if you are pinning to a release tag rather than using the latest commit?

From what I can see, helix itself doesn't use release tags to fetch grammars but just uses commit hashes

[NikitaRevenco]

How about if you are pinning to a release tag rather than using the latest commit?

Also I want to mention about implementation of this script

The easiest data we can get for a remote repository is the latest couple of commits with git ls-remote

I tried looking for any git command which gives a bit more info but they dont seem to exist

In this PR i am obtaining the latest commit for each of the remotes

Anything more complex would be a lot more difficult and computationally expensive because we would either have to

• clone each repository on local machine
• make request to GitHub's API which is going to get into rate limiting very, very fast with no API key.l

There's like 200 repos to fetch