[extractor/qdance] Add extractor (#7420)

Closes #7385
Authored by: bashonly

yt_dlp/extractor/_extractors.py

@@ -1531,6 +1531,7 @@ from .prx import (
 )
 from .puls4 import Puls4IE
 from .pyvideo import PyvideoIE
+from .qdance import QDanceIE
 from .qingting import QingTingIE
 from .qqmusic import (
     QQMusicIE,