[feature request] add to mjolnir the invite funcionality

hey o/

it would be really nice if mjolnir would have the ability to invite people inside a monitored room.

thanks & greetings,
Shin

The issue does not identify files, tests, commands, or entry points. Start by locating how Mjolnir handles monitored-room moderation and Matrix invitations, then define the expected invitation workflow and tests that demonstrate people can be invited into a monitored room.

Written by the indexing model from the issue text.