chore: move frontend files

frontend/src/helpers/createAsyncComponent.ts

@@ -0,0 +1,21 @@
+import { defineAsyncComponent, type AsyncComponentLoader, type AsyncComponentOptions, type Component, type ComponentPublicInstance } from 'vue'
+
+import ErrorComponent from '@/components/misc/error.vue'
+import LoadingComponent from '@/components/misc/loading.vue'
+
+const DEFAULT_TIMEOUT = 60000
+
+export function createAsyncComponent<T extends Component = {
+	new (): ComponentPublicInstance;
+}>(source: AsyncComponentLoader<T> | AsyncComponentOptions<T>): T {
+  if (typeof source === 'function') {
+    source = { loader: source }
+  }
+
+	return defineAsyncComponent({
+		...source,
+		loadingComponent: LoadingComponent,
+		errorComponent: ErrorComponent,
+		timeout: DEFAULT_TIMEOUT,
+	})
+}