Not compliant presence

Description of the issue

Presence stanzas sent by biboumi are missing required attributes like role and affiliation

Relevant debug logs

<presence xmlns="jabber:client" xml:lang="en" to="myjid/gajim.5TB7H4TI" from="#gtk%irc.gnome.org@irc.jabberfr.org/petar_" type="unavailable">
<x xmlns="http://jabber.org/protocol/muc#user">
    <status code="303" />
    <item nick="petar" />
</x>
</presence>

Relevant Spec: https://xmpp.org/extensions/xep-0045.html#roles

Information about roles MUST be sent in all presence stanzas generated or reflected by the room and thus sent to occupants (if the room is configured to broadcast presence for a given role).

Information about affiliations MUST be sent in all presence stanzas generated or reflected by the room and sent to occupants (if the room is configured to broadcast presence from entities with a given role).