[YouTube Music] correct the title, and add new extractor

[jefferson018200306]

Checklist

• I'm reporting a feature request
• I've verified that I'm running youtube-dl version 2021.04.17
• I've searched the bugtracker for similar feature requests including closed ones

Description

I've just noticed that some title of YouTube Music is different to the link of original YouTube website. Will you please correct the title of downloaded files from YouTube Music? Instead of using original YouTube extractor, will you please create another extractor just for YouTube Music? Let me know if this request is accepted. Thank you ❤️

Here is the example, it's up to you to judge:
Maria
https://music.youtube.com/watch?v=GCWdUH18pPc&feature=share

Maria (마리아 (Maria))
https://m.youtube.com/watch?v=GCWdUH18pPc&feature=share

Maria (마리아 (Maria))
https://www.youtube.com/watch?v=GCWdUH18pPc