build: setup tooling for publish to gcs

js/src/main.ts

@@ -1,6 +1,14 @@
 import { app, BrowserWindow, ipcMain, session } from 'electron';
 import path from 'node:path';
 import started from 'electron-squirrel-startup';
+import { updateElectronApp, UpdateSourceType } from 'update-electron-app';
+
+updateElectronApp({
+  updateSource: {
+    type: UpdateSourceType.StaticStorage,
+    baseUrl: `https://storage.googleapis.com/flowy-releases/llink/${process.platform}/${process.arch}`
+  }
+});
 
 // Handle creating/removing shortcuts on Windows when installing/uninstalling.
 if (started) {