This enumerated type is part of the Sessions Interface.
Permission level gets more restrictive further down
|EOS_OSPF_PublicAdvertised||Anyone can find this session as long as it isn't full|
|EOS_OSPF_JoinViaPresence||Players who have access to presence can see this session|
|EOS_OSPF_InviteOnly||Only players with invites registered can see this session|