feat: add job on start option for icons updater (#442)

apps/tasks/src/lib/cron-job/creator.ts

@@ -2,9 +2,20 @@ import cron from "node-cron";
 
 import type { MaybePromise } from "@homarr/common/types";
 
-export const createCronJob = (cronExpression: string) => {
+interface CreateCronJobOptions {
+  runOnStart?: boolean;
+}
+
+export const createCronJob = (
+  cronExpression: string,
+  options: CreateCronJobOptions = { runOnStart: false },
+) => {
   return {
     withCallback: (callback: () => MaybePromise<void>) => {
+      if (options.runOnStart) {
+        void callback();
+      }
+
       const task = cron.schedule(cronExpression, () => void callback(), {
         scheduled: false,
       });