Package ublue services

[castrojo]

We have common ublue-* scripts in each image, we should centralize and package them here so that we don't have to modify things in 3 places.

[ledif]

After Aurora's split, there has been divergence in the scripts located in /usr/share/ublue-os between Bluefin and Aurora. For example, bluefin-cli was renamed to aurora-cli and the tips in the MOTD have been changed.

Do you envision that we ship multiple packages that are specialized for each image (i.e., ublue-services-bluefin, ublue-services-aurora) or should we strip out the image-specific stuff and use more generic ublue branding for everything in those scripts?

[tulilirockz]

I believe we should ship image-specific things on the image, the ublue scripts should have extensible ways to use them, like adding hooks, variables, stuff like that to make them more generic so we can share them