ovr_PartyUpdateNotification_GetAction Function
ovrPartyUpdateAction_Join: The user is going to join the party.
ovrPartyUpdateAction_Leave: The user is going to leave the party.
ovrPartyUpdateAction_Invite: The user is invited to the party.
ovrPartyUpdateAction_Uninvite: The user is uninvited from the party.
ovrPartyUpdateAction ovr_PartyUpdateNotification_GetAction(const ovrPartyUpdateNotificationHandle obj)