New issue by st3r4g on void-packages repository

https://github.com/void-linux/void-packages/issues/29655

Description:
I'm opening this one because I realized our packaging is wrong wrt pipewire and bluetooth. This error should not be there.

This is upstream default policy:
```
    with-pulseaudio = [
        with-audio
        bluez5
        restore-stream
        streams-follow-default
    ]
```
which means: load the bluetooth plugin when pulseaudio functionality is installed, and we install pulseaudio functionality by default.

Two possibilities:

1) Stay with upstream policy and add `libspa-bluetooth` to `depends`. This however adds unwanted dependencies for users not using bluetooth.

2) Change the policy (it should be fine as a distro) into:
```
    with-bluetooth = [
        bluez5
    ]
    with-pulseaudio = [
        with-audio
        restore-stream
        streams-follow-default
    ]
```
And provide an additional package `pipewire-bluetooth` that install the bluetooth plugin and the `with-bluetooth` file. I could try to propose this policy to upstream, if it's a good idea.

[3) For now, simply wait for configuration to stabilize, since things could change?]

Related: #29570
cc @ericonr