feat(account): add ability to sign in with login code (#271)

Co-authored-by: Elias Schneider <login@eliasschneider.com>

frontend/src/routes/login/alternative/email/+page.server.ts

@@ -0,0 +1,7 @@
+import type { PageServerLoad } from './$types';
+
+export const load: PageServerLoad = async ({ url }) => {
+	return {
+		redirect: url.searchParams.get('redirect') || undefined
+	};
+};