Update event date to 24 april, add venue, add Ichtus Antwerpen as co-sponsor

- Change event date from 18 to 24 april across all pages, hero, meta and constants
- Add venue (Lange Winkelstraat 5, 2000 Antwerpen) to contact page, Q&A, and transactional emails
- Add LOCATION constant to packages/api/src/constants.ts
- Add Ichtus Antwerpen (ichtusantwerpen.com) as co-sponsor in footer and contact page
- Add location info card to confirmation, update, payment reminder and payment confirmation emails

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

@@ -83,7 +83,7 @@ export default function Hero() {
 					{/* Bottom Right - Dark Teal with date - above mic */}
 					<div className="relative flex flex-1 items-center justify-end bg-[#214e51]">
 						<p className="px-12 text-right font-['Intro',sans-serif] font-normal text-[clamp(2rem,5vw,6rem)] text-white uppercase leading-[1.1]">
-							VRIJDAG 18
+							VRIJDAG 24
 							<br />
 							april
 						</p>
@@ -153,7 +153,7 @@ export default function Hero() {
 							<p className="text-right font-['Intro',sans-serif] font-normal text-[8vw] text-white uppercase leading-tight">
 								VRIJDAG
 								<br />
-								18 april
+								24 april
 							</p>
 						</div>
 					</div>