add av1 support

[ghoshben]

I'm submitting a ...

• [ ] bug report
• [x] feature request
• [ ] support request

General infomration

Recently netflix added av1 profiles can you pls update this plugin with the latest codecs

Prerequisites

• [x] Are you running the latest version?

Description

the profiles are

'av1-main-L30-dash-cbcs-prk', 'av1-main-L31-dash-cbcs-prk' 'av1-main-L40-dash-cbcs-prk' 'av1-main-L41-dash-cbcs-prk' 'av1-main-L50-dash-cbcs-prk' 'av1-main-L51-dash-cbcs-prk'