Ability to sort subscriptions

Checklist

• I checked, but didn't find any duplicates (open OR closed) of this issue in the repo.
• I have read the contribution guidelines given at https://github.com/TeamNewPipe/NewPipe/blob/HEAD/.github/CONTRIBUTING.md.
• This issue contains only one feature request. I will open one issue for every feature I want to request.

What feature do you want?

Would like the ability to sort the subscription page in various ways:

1. A-Z
2. Z-A
3. Oldest to newest
4. Newest to oldest
5. User custom

Why do you want this feature?

To be able to better organize the channels I'm subscribed to on the "Subscription" tab. Would allow to put like channels next to each other without need to scroll all over the place to get to that genres creator's. Sometimes creating and using the channel groups isn't always the easiet way to get to the videos i want to watch. Im not always looking for the recent videos of a particular group of channels.