add image extension

lib/extension/image_extension.dart

@@ -0,0 +1,10 @@
+import 'package:flutter/material.dart';
+import 'package:flutter_screenutil/flutter_screenutil.dart';
+
+extension ImageExt on Image {
+  ///get Image with size
+  Image size(double size) =>
+      Image(image: this.image, width: size.w, height: size.w);
+
+  Image get i16 => this.size(16.w);
+}