Task 96ab3c0b: PWA manifest and service worker (#189)

admin/src/main.tsx

@@ -2,9 +2,12 @@ import { StrictMode } from "react";
 import { createRoot } from "react-dom/client";
 import AppRoutes from "./AppRoutes";
 import "./index.css";
+import { registerServiceWorker } from "./pwa/register";
 
 createRoot(document.getElementById("root")!).render(
   <StrictMode>
     <AppRoutes />
   </StrictMode>,
-);
+);
+
+void registerServiceWorker();