Support Pagure (pagure.io) repositories

[lcarva]

Summary

Add support for resolving and verifying packages hosted on Pagure (pagure.io).

Packages

Package	Version	Repository
python-daemon	3.1.2	https://pagure.io/python-daemon

Notes

Pagure is a git-based forge developed by Fedora. It has its own REST API for listing tags and accessing repository metadata. Archives may need to be generated via git clone + checkout rather than a direct download URL.