fix(server): more asset upload validation and docs

mobile/openapi/test/asset_api_test.dart

@@ -166,7 +166,7 @@ void main() {
 
     // 
     //
-    //Future<AssetFileUploadResponseDto> uploadFile(MultipartFile assetData) async
+    //Future<AssetFileUploadResponseDto> uploadFile(String assetType, MultipartFile assetData, String deviceAssetId, String deviceId, String createdAt, String modifiedAt, bool isFavorite, String fileExtension, { MultipartFile livePhotoData, bool isVisible, String duration }) async
     test('test uploadFile', () async {
       // TODO
     });