Workgroup::sendNotifications

static function sendNotifications(int $userId, int $groupId, int $relationId): void
{
	CSocNetUserToGroup::notifyModeratorAdded([
		'userId' => User::getCurrentUserId(),
		'groupId' => $groupId,
		'relationId' => $relationId,
	]);
	ItemUserToGroup::addInfoToChat([
		'group_id' => $groupId,
		'user_id' => $userId,
		'action' => ItemUserToGroup::CHAT_ACTION_IN,
		'sendMessage' => false,
		'role' => UserToGroupTable::ROLE_MODERATOR,
	]);
}