feat(pipewire): Add alsa integration

Any programs running through alsa only (such as spotify_player on
voidlinux) should now also work correctly through the pipewire stack.

roles/display_manager/tasks/main.yaml

@@ -22,6 +22,15 @@
     mode: 0644
     force: true
 
+- name: Enable power management for _greeter user
+  ansible.builtin.copy:
+    content: "_greeter ALL=(ALL) NOPASSWD: /usr/sbin/shutdown, /usr/bin/reboot, /usr/bin/poweroff, /usr/bin/shutdown"
+    dest: "/etc/sudoers.d/30-greeter"
+    owner: root
+    group: root
+    mode: 0644
+    force: true
+
 - name: Activate greetd service
   ansible.builtin.file:
     src: "/etc/sv/greetd"