Create a release action

[danirabbit]

No description provided.

[danirabbit]

@btkostner not exactly sure what I'm doing here. How can we make sure this goes to the stable release branch/channel/thing instead of "master" or "daily" or whatever in the appcenter flatpak repo?

[btkostner]

This should push to the 6.0 branch, that way people can target elementary 6.0 when building their applications. And then when we work on 7, it can go to 7.0 without breaking peoples apps.

[btkostner]

@danrabbit @cassidyjames How are we going to version these moving forward. Gnome does 3.38, etc. But they also introduce breaking changes between them. If we are sticking to SemVer, there should only be breaking changes between 6 and 7, so doing io.elementary.Platform:6 would make sense and we just update that tag for every point release (6.1, 6.2, etc)

Otherwise, if we plan on having breaking changes between them, doing io.elementary.Platform:6.0 and io.elementary.Platform:6.1 is the way to go.

[danirabbit]

Yeah, I think semver is the way to go. So going with "6" as the branch makes sense to me

[btkostner]

This looks good to me.

[btkostner]

Fixes #5