web/dialogs: add picker dialog & clean up small dialog

web/src/lib/download.ts

@@ -0,0 +1,9 @@
+import { device } from "$lib/device";
+
+export const downloadFile = (url: string) => {
+    if (device.is.iOS) {
+        return navigator?.share({ url }).catch(() => {});
+    } else {
+        return window.open(url, "_blank");
+    }
+};