New comment by st3r4g on void-packages repository

https://github.com/void-linux/void-packages/pull/33682#issuecomment-949061055

Comment:
I think it's very reasonable to add `libspa-v4l2` in pipewire's `depends` as the video counterpart of `libspa-alsa`. Doesn't add new dependencies and makes pipewire pick up webcams ootb. The system-wide service should be fine as it is already set to have video group membership.