Fix(web): drag n drop shared link (#3030)

* add event to trigger uploadhandler

* add dragndrop store
to handle upload in album-viewer and individuel-shared-viewer
(only on shares)

* fix handleUploadAssets no parameter

* fix format

web/src/routes/(user)/share/[key]/+page.svelte

@@ -5,7 +5,6 @@
 	import type { PageData } from './$types';
 
 	export let data: PageData;
-
 	const { sharedLink } = data;
 
 	let album: AlbumResponseDto | null = null;