This data structure is part of the Lobby Interface.
An attribute and its visibility setting stored with a lobby. Used to store both lobby and lobby member data
|int32_t ApiVersion||API Version: Set this to EOS_LOBBY_ATTRIBUTE_API_LATEST.|
|EOS_Lobby_AttributeData* Data||Key/Value pair describing the attribute|
|EOS_ELobbyAttributeVisibility Visibility||Is this attribute public or private to the lobby and its members|