feat: Add support for editing video

Add an Edit

frontend/index.html

@@ -181,6 +181,7 @@
               <div class="np-actions">
                 <button id="queueBtn" class="np-btn" title="Add to the temporary queue">＋ Queue</button>
                 <button id="saveBtn" class="np-btn" title="Save this video for offline playback">⬇ Save</button>
+                <button id="editBtn" class="np-btn" title="Cut parts out and save a custom edited copy">✂ Edit &amp; download</button>
                 <button id="addPlaylistBtn" class="np-btn" title="Add to a playlist">＋ Playlist</button>
               </div>
             </div>
@@ -309,6 +310,7 @@
 
     <script src="fingerprint.js"></script>
     <script src="opfs.js"></script>
+    <script src="video-edit.js"></script>
     <script src="async-guard.js"></script>
     <script src="sw-update.js"></script>
     <script src="app.js"></script>