add hotkeys.js

youtube/templates/watch.html

@@ -553,7 +553,7 @@ Reload without invidious (for usage of new identity button).</a>
                           // where in relation to the edge of the viewport, we are observing
                           rootMargin: "100px",
 
-                          // how much of the element needs to have intersected 
+                          // how much of the element needs to have intersected
                           // in order to fire our loading function
                           threshold: 1.0
 
@@ -608,4 +608,6 @@ Reload without invidious (for usage of new identity button).</a>
             </details>
         {% endif %}
     {% endif %}
+
+    <script src="/youtube.com/static/js/hotkeys.js"></script>
 {% endblock main %}