Started replacing toolbar in OHIF Viewer with that of Lesion Tracker (OHIF-49)

Packages/viewerbase/client/components/viewer/toolbarSectionButton/toolbarSectionButton.html

@@ -0,0 +1,16 @@
+<template name="toolbarSectionButton">
+    <div id="{{this.id}}" class="toolbarSectionButton rp-x-1 {{this.classes}} {{activeClass}}" title="{{this.title}}">
+        <div class="svgContainer">
+            {{ #if this.svgLink }} 
+            <svg>
+                <use xlink:href={{this.svgLink}}></use>
+            </svg>
+            {{ else }}
+            <i class={{iconClasses}}></i>
+            {{ /if }}
+        </div>
+        <div class="buttonLabel">
+            {{this.title}}
+        </div>
+    </div>
+</template>