logarithmic brightness

[derlui]

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 NewPipe itself and that requests for adding a new service need to be made at 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 contribution guidelines.

Feature description

Add option to make brightness adjustment logarithmic instead of linear

Why do you want this feature?

In lower light conditions adjusting the brightness can be hard to get right between too dark and too bright

Additional information

No response