add Sponsor button

popup.html

@@ -17,10 +17,18 @@
         </div>
         <button id="toggle-checkboxes">Toggle Checkboxes</button>
         <button id="bulk-delete">Bulk Delete</button>
-    </div>      
+    </div>  
+    
     <div class="footer">
+        <a href="https://github.com/sponsors/qcrao" target="_blank" id="sponsorLink">            
+            <svg aria-hidden="true" height="16" viewBox="0 0 16 16" version="1.1" width="16" data-view-component="true" class="octicon octicon-heart icon-sponsor mr-1 v-align-middle color-fg-sponsors anim-pulse-in" style="fill: #BC6796; vertical-align: middle;">
+                <path d="m8 14.25.345.666a.75.75 0 0 1-.69 0l-.008-.004-.018-.01a7.152 7.152 0 0 1-.31-.17 22.055 22.055 0 0 1-3.434-2.414C2.045 10.731 0 8.35 0 5.5 0 2.836 2.086 1 4.25 1 5.797 1 7.153 1.802 8 3.02 8.847 1.802 10.203 1 11.75 1 13.914 1 16 2.836 16 5.5c0 2.85-2.045 5.231-3.885 6.818a22.066 22.066 0 0 1-3.744 2.584l-.018.01-.006.003h-.002ZM4.25 2.5c-1.336 0-2.75 1.164-2.75 3 0 2.15 1.58 4.144 3.365 5.682A20.58 20.58 0 0 0 8 13.393a20.58 20.58 0 0 0 3.135-2.211C12.92 9.644 14.5 7.65 14.5 5.5c0-1.836-1.414-3-2.75-3-1.373 0-2.609.986-3.029 2.456a.749.749 0 0 1-1.442 0C6.859 3.486 5.623 2.5 4.25 2.5Z"></path>
+            </svg>
+            &nbsp;Sponsor
+        </a>
         <p id="copyright"></p>
     </div>
+    
     <script src="popup.js"></script>
 </body>
 </html>