[Feature request] subscription list from channel groups

[nhfo]

Checklist (Your issue will be automatically closed if you delete this part)

• I make sure that there are no existing issues - open or closed - which I could contribute my information to.

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** Description
Currently channel group gives you a unified feed of latest videos from all channels in the group. However it does not allow viewing list of subscriptions/channels and navigating to a channel from there.

It would add to usability of channel groups if

• either the what's new page would have a button to view group's channels
• or tapping a channel group would present user options to view list of channels and video feed.

[JVS-XII]

I think it's worth mentioning here. This is an addition to #374.
I took @InfinityLoop1308 's comments about the differences with upstream into account, although I don't understand why important functionality was cut.
Anyway. I would like to know how much or when it is possible to fix this function. I have many different channels and I can't imagine any other purposeful viewing of the feed. I don't know how everyone else copes, but now I have to use two almost identical applications instead of one, obsessively building a connection between them via share. And I think it is unnecessary to explain how painful building a playlist or queue can be.

Best regards! And in any case, thank you for your work.