community/ffmpeg: ffmpeg-libs does not link against libpulse
When using PulseAudio in an Alpine image, like Home Assistant does, it claims all of the ALSA devices. Since ALSA devices are exclusive, this means that ffmpeg with ALSA but no PulseAudio support can no longer access these devices. Linking against libpulse would let ffmpeg use the PulseAudio support, and wouldn't add a huge amount of overhead (around 2 MB maybe).