Add to Repology

[osalbahr]

Would be cool to see pkgs (the pantry/pkgx) in Repology to see how it compares to other repositories.

More info: https://repology.org/docs/requirements

[jhheider]

This is fairly cool. The repo contains most of the info they'd need, except for the available versions. Talking with @sanchitram1 about ideas here.