Migrate SvelteKit to the latest version 431 (#526)

web/src/routes/auth/logout/+server.ts

@@ -0,0 +1,27 @@
+import { json } from '@sveltejs/kit';
+import { api, serverApi } from '@api';
+import type { RequestHandler } from '@sveltejs/kit';
+
+export const POST: RequestHandler = async () => {
+	api.removeAccessToken();
+	serverApi.removeAccessToken();
+
+	const headers = new Headers();
+
+	headers.append(
+		'set-cookie',
+		'immich_is_authenticated=deleted; path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT;'
+	);
+	headers.append(
+		'set-cookie',
+		'immich_access_token=delete; path=/; expires=Thu, 01 Jan 1970 00:00:00 GMT'
+	);
+	return json(
+		{
+			ok: true
+		},
+		{
+			headers
+		}
+	);
+};