feat: add update indicator (#1626)

packages/cron-jobs/src/jobs/update-checker.ts

@@ -0,0 +1,13 @@
+import { EVERY_HOUR } from "@homarr/cron-jobs-core/expressions";
+import { updateCheckerRequestHandler } from "@homarr/request-handler/update-checker";
+
+import { createCronJob } from "../lib";
+
+export const updateCheckerJob = createCronJob("updateChecker", EVERY_HOUR, {
+  runOnStart: true,
+}).withCallback(async () => {
+  const handler = updateCheckerRequestHandler.handler({});
+  await handler.getCachedOrUpdatedDataAsync({
+    forceUpdate: true,
+  });
+});