Crop the notification thumbnail in 1:1 mode instead of stretching it

[OxygenCobalt]

Checklist

• I made sure that there are no existing issues - open or closed - which I could contribute my information to.
• I'm aware that this is a request for NewPipe itself and that requests for adding a new service need to be made at NewPipeExtractor.
• I have taken the time to fill in all the required details. I understand that the feature request will be dismissed otherwise.
• This issue contains only one feature request.
• I have read and understood the contribution guidelines.

Feature description

When the "Scale thumbnail to 1:1 aspect ratio" setting is enabled, the thumbnail should be cropped down as to make it 1:1, instead of it being scaled to be 1:1.

Why do you want this feature?

While using the whole thumbnail for the notification's large icon works fine on Android 10 and below, it breaks down on Android 11/12, in which it looks out of place. The 1:1 option is also not ideal here, as it distorts the thumbnail in an unappealing manner.

Additional information

I have a fork with this fix already implemented here, I just want to know whether there are any issues with cropping the thumbnail in such a way, hence why scaling was used instead.