YuriTheHenrique Pipewire implements the Pulseaudio APIs. You can literally just use pavucontrol
with it.
As for gnome extensions that work well with Pipewire I use the following (both compatible with GNOME 40):
https://extensions.gnome.org/extension/906/sound-output-device-chooser/
https://extensions.gnome.org/extension/3499/application-volume-mixer/