Twitter module initial commit

[Aciid]

Twitter

Reads Twitter links from room, replaces domain with nitter, removes query parameters and posts link to room.

Usage

• !twitter enable - enable converting twitter links to nitter links in this room (must be done as room admin)
• !twitter disable - disable converting twitter links to nitter links in this room (must be done as room admin)

Additional improvements: allow changing of which nitter fediverse proxy is used for the replacement link. If user's message to room is only a twitter link and bot is admin, remove the post and post the replaced nitter link.

[vranki]

Could you rename the module to nitter please? We might have a twitter module (to tweet messages to twitter) so I'd like to reserve the name for that. Otherwise LGTM.