Add option to reorder channels list

Checklist

• I made sure that there are no existing issues - open or closed - which I could contribute my information to.
• I have read the FAQ and my problem isn't listed.
• 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

It would be nice if it was possible to order channels in the channels list.

Why do you want this feature?

Sometimes I want to have access to a specific channel only, not a playlist. Reordering channels would make this possible by putting channels I access more frequently on the top.

Additional information

This would enable easy access to specific channels.

[ShareASmile]

I can't understand it totally though but I think you need #7926