Generate invite links / Easy Onboarding using XEP-0401

[madsamjp]

Describe your feature proposal
In some XMPP clients (such as Conversations on Android), you can generate an invite URL for inviting non XMPP users to register an account on the server. This is useful for invite_only servers where users are can invite their friends to join the server by generating an ad-hoc registration link (without having to rely on server admins). See https://xmpp.org/extensions/xep-0401.html or https://prosody.im/doc/modules/mod_invites_adhoc for more details.

Is your feature request related to a problem? Please describe.
It would allow for much easier on-boarding of non-XMPP IOS users into the ecosystem.

Apologies if this feature is already implemented - but I couldn't find it in the app.