Add support for SMPTE timecode

[njsauriol]

Describe:

Add support form SMPTE timecode in player.

• Display the current time position in SMPTE timecode format (video and audio)
• Provide a starting timecode for a media (video and audio)
• Enable frame-accurate playback (video only)

Alternatives:

For reference - VideoFrame - HTML5 Video SMPTE Time Code and Frame Seeking API

Anything Else?

SMPTE timecode is presented in hour:minute:second:frame format, where sub-second timecode time values are expressed in terms of frames (instead of milliseconds), based on the video/audio framerate.

Most commonly used framerates: 23.976 (23.98), 24, 25, 29.97, 30, 59.94, 60

[ThaUnknown]

VideoFrame isn't a good solution for this, it effectively just tries it's best to guess, which doesn't work well at all for variable framerate videos [mkv and webm], you're way better off using requestVideoFrameCallback() which is supported by most browsers, and those that don't support it can use a roughly accurate polyfill which uses frame rendering stats, but the polyfill suffers from the same issues as VideoFrame