Describe the request

I've had this idea for a while now but hadn't sat down to actually do it: white-label build support

Suppose a company or organization has their own fedi instance, for example gov.gr, and wants their employees or members to only connect to social.gov.gr, Tuba should be able to read a config on compile-time that skips the instance picking view as well as rebrand to the instance's branding

Implementation Details

• This follows the GNOME HIG.