UI: Add confirm screen for unload/reload when device in use

Reloading/Unloading destroys the virtual device that an application
is currently using. Add a warning that this may cause strange behaviour.

Temporarily force clang if available

GCC10 seems to refuse to link libm. GCC11 and clang seem to work fine.

display error screen if module load fails

Add support for PipeWire

Warning: Alpha quality. Please manage your expectations.

Use -O2 for LADSPA module

Make sure we remove rlimit for unloading too

fix noop updater

Remember last used device and preselect pulseaudio default

Remember last used device and preselect pulseaudio default

Fix regression in CLI