[extractor/kanal2] Add extractor (#5575)

Authored by: glensc, pukkandan, bashonly

yt_dlp/extractor/_extractors.py

@@ -820,6 +820,7 @@
 from .jwplatform import JWPlatformIE
 from .kakao import KakaoIE
 from .kaltura import KalturaIE
+from .kanal2 import Kanal2IE
 from .karaoketv import KaraoketvIE
 from .karrierevideos import KarriereVideosIE
 from .keezmovies import KeezMoviesIE