feat(EraserTool): add eraserTool to @ohif/extension-cornerstone (#912)

This includes `ui` changes in the same commit, so it will see a feature bump as well

platform/ui/src/elements/Icon/getIcon.js

@@ -30,6 +30,7 @@ import edit from './icons/edit.svg';
 import ellipseCircle from './icons/ellipse-circle.svg';
 import ellipseH from './icons/ellipse-h.svg';
 import ellipseV from './icons/ellipse-v.svg';
+import eraser from './icons/eraser.svg';
 import exclamationCircle from './icons/exclamation-circle.svg';
 import exclamationTriangle from './icons/exclamation-triangle.svg';
 import fastBackward from './icons/fast-backward.svg';
@@ -110,6 +111,7 @@ const ICONS = {
   'create-comment': createComment,
   'create-screen-capture': createScreenCapture,
   edit,
+  eraser,
   'fast-backward': fastBackward,
   'fast-forward': fastForward,
   'object-group': objectGroup,

platform/ui/src/elements/Icon/icons/eraser.svg

@@ -0,0 +1,15 @@
+<svg
+  xmlns="http://www.w3.org/2000/svg"
+  viewBox="0 0 2048 1792"
+  aria-labelledby="eraser"
+  width="1em"
+  height="1em"
+  fill="currentColor"
+>
+  <title id="title">Eraser</title>
+  <path transform="translate(0,1792) scale(1,-1)" fill="ACTIVE_COLOR" d="M960 1408l336-384h-768l-336 384h768zm1013-1077q15
+      34 9.5 71.5t-30.5 65.5l-896 1024q-38 44-96 44h-768q-38
+      0-69.5-20.5t-47.5-54.5q-15-34-9.5-71.5t30.5-65.5l896-1024q38-44 96-44h768q38
+      0 69.5 20.5t47.5 54.5z"
+  />
+</svg>