Upload RPM and DEB packages with a release

[SchoolGuy]

Is your feature request related to a problem?

As a user
I want to be able to easy try out the latest release
so that I can get started as quick as possible.

Provide a detailed description of the proposed feature

Use the goreleaser functionality for extra_files to push separately built packages along with a release. This implies that our CI will also build local versions of the packages.

Alternatives you've considered

None

Additional information

Goreleaser documentation: https://goreleaser.com/customization/release/#github