feat: disable OBEX Bluetooth file transfer method

No documentation as there is no intention to ever have file transfer
support in the AudioVM.

salt/sys-audio/files/server/systemd-user/obex.service.d/50_qusal.conf

@@ -0,0 +1,7 @@
+# SPDX-FileCopyrightText: 2024 Benjamin Grande M. S. <ben.grande.b@gmail.com>
+#
+# SPDX-License-Identifier: AGPL-3.0-or-later
+# vim: ft=systemd
+[Unit]
+ConditionPathExists=/var/run/qubes-service/obex
+After=qubes-sysinit.service

salt/sys-audio/install-bluetooth.sls

@@ -22,4 +22,14 @@ include:
       - libspa-0.2-bluetooth
       - firmware-iwlwifi
 
+"{{ slsdotpath }}-user-systemd":
+  file.recurse:
+    - name: /usr/lib/systemd/user/
+    - source: salt://{{ slsdotpath }}/files/server/systemd-user/
+    - dir_mode: '0755'
+    - file_mode: '0644'
+    - user: root
+    - group: root
+    - makedirs: True
+
 {% endif -%}