feat: Add video playback progress display and saving

Co-authored-by: mathieumoran1 <[email protected]>

public/player.html

@@ -115,6 +115,11 @@
       <span class="badge bg-secondary">Source</span>
       <span id="source-label" class="badge bg-light text-dark badge-src">—</span>
     </div>
+
+    <div class="mt-2 d-flex flex-wrap gap-2 align-items-center">
+      <span class="badge bg-secondary">Progress</span>
+      <span id="progress-status" class="text-muted small">—</span>
+    </div>
   </div>
 
   <script src="https://cdn.jsdelivr.net/npm/[email protected]/dist/js/bootstrap.bundle.min.js"></script>