Support for higher resolution favicons

[David-Development]

Nowadays many website support high-resolution favicons (see: https://stackoverflow.com/a/22007642)

It would be very helpful if this library extracts the higher resolution favicon or returns a list of all available favicons that were found for a given url. I'm asking since this library is used in the nextcloud news reader and we would like to display the favicons using a higher resolution as the default 16x16 icons look blurry on modern displays.

Reference: nextcloud/news#633 (comment)

[ArthurHoaro]

Thanks for the report, I'll try to take a look at this.