Add translations and testing framework.

src/main/ipc/ipcMainHandler.user.ts

@@ -0,0 +1,14 @@
+import { IpcMainEvent } from "electron";
+import Store from "../store/store";
+import { User } from "firebase/auth";
+import log from "electron-log/main";
+
+const ipcMainHandleAuthStateChanged = async (
+  event: IpcMainEvent,
+  user: User | null
+) => {
+  Store.set("user", user);
+  log.log(Store.get("user"));
+};
+
+export { ipcMainHandleAuthStateChanged };