feat(web) Add drag n drop upload functionality (#1216)

* Add image drag n drop functionality

* Change upload cover name, background color and opacity

web/src/lib/stores/album-upload-asset.ts

@@ -1,13 +0,0 @@
-import { writable } from 'svelte/store';
-
-function createAlbumUploadStore() {
-	const albumUploadAsset = writable<Array<string>>([]);
-	const albumUploadAssetCount = writable<number>(9999);
-
-	return {
-		asset: albumUploadAsset,
-		count: albumUploadAssetCount
-	};
-}
-
-export const albumUploadAssetStore = createAlbumUploadStore();