Option to set default group name on groups with no name.

[ownbee]

Groups with no name is handled differently in different Chat clients. Some better some worse. To get a consistent and good naming of these kind of groups, it would be ideal if this plugin could provide an option to set the name.

Facebook is naming groups with no name as "Firstname1, Firstname2 and Firstname3" which is short and good. However, the Matrix clients only have Fullname and not Firstname. For example, nheko gives the name "Ben Andersson (FB) and 5 others" which too long per user and not that unique if you have multiple chats including Ben.

I would like to have groups named "Ben, Elias and Philp (FB)" or "Ben, Elias, Philp, Ida, .... (FB)" which could only be solved in mautrix/facebook i think.

[maltee1]

This would break with multiple platform bridged to the same room.