Play all button for channel groups

[shadowsama25]

Checklist

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

What feature do you want?

Hi, I use the App every day but I have to select all the videos manually to load them to the background, but when we choose only 1 channel the button "play all" is really good. Can we use this feature to the personal channel group?

Why do you want this feature?

Gained a lot of time.

[SameenAhnaf]

Closing in favor of #5737