Chapters support

[Monoxide8969]

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

Add chapters support

Why do you want this feature?

To keep the app on par with the functionalities of the browser extension

Why ist the feature relevant to this fork?

This would be an improvement to the sponsorblock implementation in the app

Additional information

No response