Add Pipewire support

### Verification - [x] This issue's title and/or description do not reference a single formula e.g. `brew install wget`. If they do, open an issue at https://github.com/Homebrew/homebrew-core/issues/new/choose instead. ### Provide a detailed description of the proposed feature Pipewire has multiple[benefits](https://docs.pipewire.org/index.html). Adding Pipewire support requires [invasive changes](https://github.com/Homebrew/homebrew-core/pull/286705#issuecomment-4686239532). Which is why I was prompted to create this issue. ### What is the motivation for the feature? I noticed MPV on homebrew uses Pulseaudio instead of Pipewire. And I tried to build MPV with Pipewire support, but I was [notified ](https://github.com/Homebrew/homebrew-core/pull/286441#issuecomment-4641895656) bigger changes were needed. ### How will the feature be relevant to at least 90% of Homebrew users? People will notice less latency which is especially noticeable on Bluetooth devices. ### What alternatives to the feature have been considered? Replacing Pulseaudio completly with Pipewire. But this would break many packages by default.