[vidio] Add extractor (Closes #7195)

[Vidio] fix fallback value and wrap duration in int_or_none

[Vidio] don't use video_id for _html_search_regex()

youtube_dl/extractor/extractors.py

@@ -910,6 +910,7 @@ from .videomore import (
 )
 from .videopremium import VideoPremiumIE
 from .videott import VideoTtIE
+from .vidio import VidioIE
 from .vidme import (
     VidmeIE,
     VidmeUserIE,