Add lefthook APK to Alpine registry

[mrexox]

⚡ Summary

Star building lefthook package for Alpine Linux and push it to the core packages

Value

For those who uses Alpine Linux and want to use lefthook whether on local machines or CIs

Behavior and configuration changes

Probably some CI stuff + contribution to Alpine registry

[sanmai-NL]

I think (based on some experience) that you will have to file a Merge Request at https://gitlab.alpinelinux.org/alpine/aports, by adding a package under the testing subtree. Hopefully, the GitHub Action provides the right files, not just the output .apk.

[mrexox]

There must be a way to generate the PR from the CI 🤔
I'll investigate