Adds pmb:gpu-accel option to Phosh, Plasma Mobile/Bigscreen, Sway,
Glacier and Kodi APKBUILDs to hide the UIs at `pmbootstrap init`
for devices without GPU acceleration support.
Related: pmbootstrap!2043
[ci:skip-build]: already built successfully in CI
[ci:skip-vercheck]
This:
1. fixes the UI not showing up on boot by installing polkit-elogind
2. makes for fancy password popups when root rights are needed rather
than just fail silently
UIs that depend on networkmanager also have an added dependency on
dnsmasq since this was removed from postmarketos-base
[ci:ignore-count] lots of packages, but no code compilation..
Let all packages depending on tinydm depend on tinydm-openrc too. This
is needed to make sure that tinydm-openrc is installed, before the
tinydm service is enabled in the UI's post-install scripts.
This was not an issue because tinydm currently depends on tinydm-openrc.
But that's a hack and will be removed when upstreaming tinydm to alpine.
[ci:skip-build]: already built successfully in CI
