Add option to toggle feature index overlay

Author: ben-lu-uw

src/popup.html

@@ -24,6 +24,11 @@ <h6 class="card-title">Accessibility Settings</h6>
         <label class="form-check-label" for="announceMovement">Announce movement for screen readers</label>
       </div>
 
+      <div class="form-check form-switch">
+        <input class="form-check-input" type="checkbox" id="featureIndexOverlayOption">
+        <label class="form-check-label" for="featureIndexOverlayOption">Show feature index</label>
+      </div>
+
     </div>
   </div>
 

src/popup.js

@@ -62,6 +62,7 @@ function resetStorage() {
 document.addEventListener("DOMContentLoaded", () => {
   loadOptions();
   document.getElementById("announceMovement").addEventListener("change", handleCheckboxChange);
+  document.getElementById("featureIndexOverlayOption").addEventListener("change", handleCheckboxChange);
   document.getElementById("clear").addEventListener("click", resetStorage);
 });