Endpoints for room management.
GET /_matrix/client/r0/rooms/{roomId}/aliases
POST /_matrix/client/r0/createRoom
GET /_matrix/client/r0/rooms/{roomId}/event/{eventId}
POST /_matrix/client/r0/rooms/{roomId}/report/{eventId}
POST /_matrix/client/r0/rooms/{roomId}/upgrade
Whether or not a newly created room will be listed in the room directory.