Add support for modifying Content-Disposition

streamtg.py

@@ -118,6 +118,8 @@ async def handler(request):
     }
     if content_type := query.get('Content-Type'):
         headers['Content-Type'] = content_type
+    if content_disposition := query.get('Content-Disposition'):
+        headers['Content-Disposition'] = content_disposition
 
     async def download():
         tmp_offset = offset