Resolve "Evaluate use of Vite instead of Webpack"

Closes #769 (closed)

Happy Christmas, @hansegucker !

aleksis/core/assets/index.js

@@ -3,9 +3,16 @@ import "@mdi/font/css/materialdesignicons.css";
 import "./util";
 import "./app";
 
+// This imports all known AlekSIS app entrypoints
+// The list is generated by util/frontent_helpers.py and passed to Vite,
+//  which aliases the app package names into virtual JavaScript modules
+//  and generates importing code at bundle time.
+import "aleksisAppImporter";
+
 import CeleryProgress from "./components/celery_progress/CeleryProgress.vue";
 import About from "./components/about/About.vue";
 
+
 window.router.addRoute({
   path: "/celery_progress/:taskId",
   component: CeleryProgress,