React to CentOS Stream dist-git comments

[lachmanfrantisek]

As a next step for basic CentOS Stream support implemented in https://github.com/packit/packit/pull/2085 , we need to support reacting to CentOS Stream dist-git comments.

TODO:

• [ ] Treat the events coming from https://gitlab.com/redhat/centos-stream/rpms/ as dist-git events so the various packit comment commands work the same way as in Fedora dist-git.
  • [ ] #2471
  • [ ] Enable consuming of those events in packit/packit-service-fedmsg (the topic is bit more complicated since it includes the namespace and repository too, hopefully it won't be a problem)
  • [ ] Ensure that handlers are able to handle (pun not intended) the dist-git events from GitLab
• [ ] Make a demo about that.
• [ ] Create a Mastodon post about that.

[mfocko]

Split off the first three points into a separate card… story points: 5