Initial stab at Image face + HTMLImageElement

Author: zetashift

dom/src/main/scala/org/scalajs/dom/HTMLImageElement.scala

@@ -25,9 +25,23 @@ abstract class HTMLImageElement extends HTMLElement {
   /** Reflects the alt HTML attribute, indicating fallback context for the image. */
   var alt: String = js.native
 
+  /** Allows you to specify the layout width of the image for each of a list of media conditions. */
+  var sizes: String = js.native
+
   /** Reflects the src HTML attribute, containing the URL of the image. */
   var src: String = js.native
 
+  /** srcset is a string which identifies one or more image candidate strings, separated using commas (,) each
+    * specifying image resources to use under given circumstances.
+    *
+    * Each image candidate string contains an image URL and an optional width or pixel density descriptor that indicates
+    * the conditions under which that candidate should be used instead of the image specified by the src property.
+    */
+  var srcset: String = js.native
+
+  /** Indicates the URL of the image which is currently presented in the <img> element it represents. */
+  def currentSrc: String = js.native
+
   /** Reflects the usemap HTML attribute, containing a partial URL of a map element. */
   var useMap: String = js.native
 

dom/src/main/scala/org/scalajs/dom/Image.scala

@@ -0,0 +1,10 @@
+package org.scalajs.dom
+
+/** Image creates a new HTMLImageElement instance. It is functionally equivalent to document.createElement('img').
+  *
+  * @param width
+  *   The width of the image (i.e., the value for the width attribute).
+  * @param height
+  *   The height of the image (i.e., the value for the height attribute).
+  */
+class Image(width: Int, height: Int) extends HTMLImageElement