refactor(bluefin): clean up bluefin-branding spec (and remove distrobox config)

[tulilirockz]

This pretty much just changes how the spec is made and moves some files to other folders instead of the weird structuring it had before.

Here is the diff, I just removed the default distrobox config because I remember having an issue where someone didnt want it

@@ -10,6 +10,9 @@
 ./etc/dconf/db/distro.d/05-bluefin-searchlight-extension
 ./etc/dconf/db/distro.d/locks
 ./etc/dconf/db/distro.d/locks/01-bluefin-locked-settings
-./etc/distrobox
-./etc/distrobox/distrobox.conf
-./etc/distrobox/distrobox.example
 ./etc/geoclue
 ./etc/geoclue/conf.d
 ./etc/geoclue/conf.d/99-beacondb.conf
@@ -75,6 +78,7 @@
 ./usr/share/backgrounds/bluefin/12-bluefin-night.jxl
 ./usr/share/backgrounds/bluefin/12-bluefin.xml
 ./usr/share/backgrounds/bluefin/chicken.jxl
-./usr/share/backgrounds/bluefin/gnome-background-properties
 ./usr/share/backgrounds/bluefin/xe_clouds.jxl
 ./usr/share/backgrounds/bluefin/xe_foothills.jxl
 ./usr/share/backgrounds/bluefin/xe_space_needle.jxl

This also allows us to individually version components

Fixes: ublue-os/bluefin#2156