Use server actions instead of client-side API calls

apps/link/app/_actions/groups.ts

@@ -0,0 +1,16 @@
+"use server";
+
+import { executeREST } from "app/_lib/zammad";
+
+export const getGroupsAction = async () => {
+  const groups = await executeREST({
+    path: "/api/v1/groups",
+  });
+  const allGroups = groups ?? [];
+  const formattedGroups = allGroups.map((group: any) => ({
+    label: group.name,
+    value: `gid://zammad/Group/${group.id}`,
+  }));
+
+  return formattedGroups;
+};