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/services/backup_verification.service.dart

@@ -165,8 +165,8 @@ class BackupVerificationService {
           // (skip first few KBs containing metadata)
           final Uint64List localImage =
               _fakeDecodeImg(local, await file.readAsBytes());
-          final res = await apiService.downloadApi
-              .downloadFileWithHttpInfo(remote.remoteId!);
+          final res = await apiService.assetsApi
+              .downloadAssetWithHttpInfo(remote.remoteId!);
           final Uint64List remoteImage = _fakeDecodeImg(remote, res.bodyBytes);
 
           final eq = const ListEquality().equals(remoteImage, localImage);