change case loading in server side mode, made case list functional

src/routes/(angemeldet)/list/+page.server.ts

@@ -0,0 +1,10 @@
+import { getListOfVorgänge } from '$lib/server/vorgangService';
+import type { PageServerLoad } from '../../(token-based)/view/$types';
+
+export const load: PageServerLoad = async () => {
+    const caseList = await getListOfVorgänge();
+
+    return {
+        caseList
+    };
+};