refactor: split update service responsibilities

src/main/services/update/update-status-publisher.ts

@@ -0,0 +1,9 @@
+import { BrowserWindow } from 'electron'
+import { IPC_CHANNELS } from '../../../shared/ipc-channels'
+import type { UpdateStatus } from '../../types/update.types'
+
+export function publishUpdateStatus(status: UpdateStatus): void {
+  BrowserWindow.getAllWindows().forEach((window) => {
+    window.webContents.send(IPC_CHANNELS.UPDATE_STATUS_CHANGED, status)
+  })
+}