Add support for Message Styling

Description

Spark should support the new Message Styling XEP, that's currently in the works here: https://xmpp.org/extensions/inbox/styling.html

Environment

None
Fixed

Assignee

Guus der Kinderen

Reporter

Guus der Kinderen

Labels

None

Expected Effort

None

Ignite Forum URL

None

Fix versions

Affects versions

Priority

Major