Added a confirmation when generating codes

src/pages/(admin)/BatchCodeGenerator.tsx

@@ -95,6 +95,8 @@ export default function BatchCodeGenerator({user}: {user: User}) {
 	}, [filesContent]);
 
 	const generateCode = (type: Type) => {
+		if (!confirm(`You are about to generate ${infos.length} codes, are you sure you want to continue?`)) return;
+
 		const uid = new ShortUniqueId();
 		const codes = infos.map(() => uid.randomUUID(6));