[extractor/Smotrim] Add extractor (#5015)

Authored by: nikita-moor, Lesmiscore

yt_dlp/extractor/_extractors.py

@@ -1619,6 +1619,7 @@ from .sky import (
 from .slideshare import SlideshareIE
 from .slideslive import SlidesLiveIE
 from .slutload import SlutloadIE
+from .smotrim import SmotrimIE
 from .snotr import SnotrIE
 from .sohu import SohuIE
 from .sonyliv import (