[neon] packaging branches branched

[Harald Sitter]

Hola!

For qt, frameworks, and plasma repos on packaging.neon we now have CI
branches called Neon/unstable. These were forked from their Kubuntu
counterparts kubuntu_unstable. Moving forward it was suggested to
regularly merge Debian, which seems like a reasonable plan so far.

They were created with this here bugger:
https://github.com/blue-systems/pangea-tooling/blob/master/ci-tooling/nci/branch_merger.rb

HS