[voxmedia] Add new extractor(closes #3182)

youtube_dl/extractor/__init__.py

@@ -904,6 +904,7 @@ from .vk import (
 from .vlive import VLiveIE
 from .vodlocker import VodlockerIE
 from .voicerepublic import VoiceRepublicIE
+from .voxmedia import VoxMediaIE
 from .vporn import VpornIE
 from .vrt import VRTIE
 from .vube import VubeIE