Feature Request: Support Packages Hosted On Gitea Instance

[trymeouteh]

Summary

To allow packages in the apm that are hosted on a Gitea instance.

Motivation

Github is centralised git service. Gitea is a self hosted, fully open source git service which will be adding federation abilities in the future (Like Mastodon). To allow developers who host their own Gitea git service to use Gitea for packages that can be downloaded in the APM

Additional context

Maybe also add support got Gitlab instances also