chore: add ymlfmt and format exisiting YAML files

[fahdfady]

resolves #1650

• this uses yamlfmt to keep a standard of yaml files formatting via a .yamlfmt config file
• adds a CI step to check yaml files formatting
• format existing yaml files

[fahdfady]

should i add this to the CONTRIBUTING.md docs or the nix dev shell?

[davidlattimore]

Thanks! Could you add something to CONTRIBUTING.md about it, including a link to yamlfmt. Are you intending to verify the formatting somehow? Perhaps from a test?

[fahdfady]

Are you intending to verify the formatting somehow? Perhaps from a test?

Yes. Provided here:
https://github.com/wild-linker/wild/pull/1652/changes#diff-b803fcb7f17ed9235f1e5cb1fcd2f5d3b2838429d4368ae4c57ce4436577f03fR138-R151
I'm waiting for the actions to run on this PR to see if it's working or not. I will also intentionally mess up the formatting to see how it fails in the CI then revert back

[lapla-cogito]

Thanks!

[mati865]

There is something wrong with this change: Warning: Restore cache failed: Dependencies file is not found in /home/runner/work/wild/wild. Supported file pattern: go.mod
https://github.com/wild-linker/wild/actions/runs/22790352787/job/66115576377#step:3:26

[fahdfady]

I think it's looking for a go.mod while installing yamlfmt inside the repo but couldn't find it. I think this is harmless, we don't need to add a go.mod just for the yamlfmt package.

[mati865]

Fixed in #1696