TF-56 Add object upload request & response and widget builder

model/lib/upload/file_info.dart

@@ -0,0 +1,17 @@
+
+import 'package:equatable/equatable.dart';
+
+class FileInfo with EquatableMixin {
+  final String fileName;
+  final String filePath;
+  final int fileSize;
+
+  FileInfo(this.fileName, this.filePath, this.fileSize);
+
+  factory FileInfo.empty() {
+    return FileInfo('', '', 0);
+  }
+
+  @override
+  List<Object> get props => [fileName, filePath, fileSize];
+}