Bug#1070845: Status of Godot 4.4.1 packaging

[Travis Wrightsman]

I've been quite busy at work since FTP masters reviewed Godot 4.3 but am
slowly starting to have more time to circle back to this.

I imported 4.4.1 to my local repo and am happy to report that it builds
all three configurations (editor + templates) without error and without
modifications to the 4.3 packaging.

Unfortunately there are a couple of unit tests now failing for the
editor and I will have to debug these, likely asking for help upstream.

Then I'd like to take another shot at reducing the vendored libraries
since FTP masters requested clarification on which third party code is
being used. I think the easiest way to address that is just dropping
unused third party code from the copyright and therefore the Debian
orig.tar.gz.