Increase the playback speed to 6x

[hrshtein]

Checklist

• [X] I made sure that there are no existing issues - open or closed - which I could contribute my information to.
• [X] I have read the FAQ and my problem isn't listed.
• [X] I'm aware that this is a request for Tubular itself and that requests for adding a new service need to be made in vanilla NewPipeExtractor.
• [X] I have taken the time to fill in all the required details. I understand that the feature request will be dismissed otherwise.
• [X] This issue contains only one feature request.
• [X] I have read and understood the vanilla NewPipe contribution guidelines.

Feature description

Increase playback speed to 6x

Why do you want this feature?

As this feature will be very helpful in completing Lectures, as there are times when you have to only visually understand content.

Why ist the feature relevant to this fork?

The request was rejected when posted upstream. TeamNewpipe#3876

Additional information

No response

[DI555]

@polymorphicshade , please , make it up to 10x !!! in some cases it should need exactly not less than 10x !!! many thanks in advance!