mpv-player
debian: add some 'easy' dependencies
Adds dependencies for SDL2, Wayland, libsixel, all of which are available in both Debian stable and Ubuntu 20.04 LTS and 22.04 LTS.
Also enables DVB support (which doesn't have any dependencies) and bumps the debhelper compat version to something less archaic.
Old I know. I would have merged it but according to debian documentation:
The compat 11 is discouraged for new packages as it suffers from feature interaction between dh_installinit and dh_installsystemd causing services to not run correctly in some cases.
That probably doesn't apply to us but maybe we should pick a different number anyways. Not sure if 12 makes the most sense or something even newer. I'll leave that up to you.
