refactor: asset media endpoints (#9831)

* refactor: asset media endpoints

* refactor: mobile upload livePhoto as separate request

* refactor: change mobile backup flow to use new asset upload endpoints

* chore: format and analyze dart code

* feat: mark motion as hidden when linked

* feat: upload video portion of live photo before image portion

* fix: incorrect assetApi calls in mobile code

* fix: download asset

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Co-authored-by: shenlong-tanwen <139912620+shalong-tanwen@users.noreply.github.com>
Co-authored-by: Zack Pollard <zackpollard@ymail.com>

mobile/lib/widgets/search/curated_places_row.dart

@@ -115,7 +115,7 @@ class CuratedPlacesRow extends CuratedRow {
         final actualIndex = index - actualContentIndex;
         final object = content[actualIndex];
         final thumbnailRequestUrl =
-            '${Store.get(StoreKey.serverEndpoint)}/asset/thumbnail/${object.id}';
+            '${Store.get(StoreKey.serverEndpoint)}/assets/${object.id}/thumbnail';
         return SizedBox(
           width: imageSize,
           height: imageSize,