feat:add registration management with token-based access

Add management tokens to registrations allowing users to view, edit, and
cancel their registration via a unique URL. Implement email
notifications
for confirmations, updates, and cancellations using nodemailer. Simplify
art forms grid from 6 to 4 items and remove trajectory links. Translate
footer links to Dutch and fix matzah spelling in info section.

apps/web/src/components/homepage/Info.tsx

@@ -124,7 +124,7 @@ export default function Info() {
 							<div className="flex flex-col gap-4">
 								<p className="text-lg text-white/90 leading-relaxed">
 									In de Bijbel staat ongedesemd brood (ook wel{" "}
-									<em className="text-white">matze</em> genoemd) symbool voor
+									<em className="text-white">matzah</em> genoemd) symbool voor
 									eenvoud en zuiverheid, zonder de &apos;ballast&apos; van
 									desem.
 								</p>