add types and fix loading

src/routes/logout/+page.server.ts

@@ -0,0 +1,8 @@
+import { logout } from '$api/authService';
+import type { RequestEvent } from '@sveltejs/kit';
+import { redirect } from '@sveltejs/kit';
+
+export const load = async (event: RequestEvent) => {
+	await logout(event);
+	redirect(303, '/login');
+};