Add more youtube video data

[sarmong]

Since Miniflux already started using Youtube API for reading time, I think some more quality of life improvements are worth considering.

Premieres and Live Streams are a bit annoying because there have 1 minute read displayed and you need to open the article to see that there is no video or live stream yet.

Possible features:

• Auto-refresh reading time after the Premiere/Live Stream recording is released

• Filter out Premieres and/or scheduled Live Streams from articles and only show them when they are released (under settings option)

• Indicate whether it is a scheduled Live Stream, currently live Live Stream or a scheduled Premiere. Since there isn't really a place for this in the UI, perhaps it can be shown instead of 1 minute read - scheduled or live

• I have read this document: https://miniflux.app/opinionated.html#feature-request