more user frendly format selection syntax

[ArtiiP]

Checklist

• I'm reporting a feature request
• I've verified that I'm running youtube-dl version 2019.05.20
• I've searched the bugtracker for similar feature requests including closed ones

Description

for now to select video other than best i must write some magic code for -f option

may by better just accept easy to remember strings like 480p 720p >360p(this one select 480 but not 720 1080p) 1080p 720p.mp4 720p.webm etc

in this mode audio format selected automaticaly without transcoding (if posible already "mixed' in stream)

[dstftw]

I don't see any point in this. [height>360] is not any harder to remember than >360p. Format selection syntax is quite straightforward and simple while also flexible. Introducing another less flexible notation does not make any sense.