Generate a YGOPro Lua script for the following Yu-Gi-Oh card effect:
Add 1 Pendulum Monster from your Deck to your Extra Deck face-up. You can only activate 1 "Pendulum Treasure" per turn.
--ペンデュラム・トレジャー
--Pendulum Treasure
local s,id=GetID()
function s.initial_effect(c)
	--Activate
	local e1=Effect.CreateEffect(c)
	e1:SetDescription(aux.Stringid(id,0))
	e1:SetType(EFFECT_TYPE_ACTIVATE)
	e1:SetCode(EVENT_FREE_CHAIN)
	e1:SetCountLimit(1,id,EFFECT_COUNT_CODE_OATH)
	e1:SetTarget(s.target)
	e1:SetOperation(s.activate)
	c:RegisterEffect(e1)
end
function s.tefilter(c)
	return c:IsType(TYPE_PENDULUM) and not c:IsForbidden()
end
function s.target(e,tp,eg,ep,ev,re,r,rp,chk)
	if chk==0 then return Duel.IsExistingMatchingCard(s.tefilter,tp,LOCATION_DECK,0,1,nil) end
end
function s.activate(e,tp,eg,ep,ev,re,r,rp)
	Duel.Hint(HINT_SELECTMSG,tp,aux.Stringid(id,0))
	local g=Duel.SelectMatchingCard(tp,s.tefilter,tp,LOCATION_DECK,0,1,1,nil)
	if #g>0 then
		Duel.SendtoExtraP(g,tp,REASON_EFFECT)
	end
end