#332 Direct mentoring support (group member)

title

Mentorship testing cross zone:

https://cdn.discordapp.com/attachments/603677936582918189/826269627369390090/crosszonementor.mp4

need to deal with the spells side of mentoring still, moving to beta lyrae

spells are now removed from player and their targets when mentoring down/removing mentorship as part of this fix:

1af9491eb4

There are extended parts to mentoring that may need to be explored, but the basis seems implemented. Will open new issues as we encounter concerns.