Channel Participants list

I like the feature that the official MC app has of viewing channel participants. 
Would be better if we could just see all that are in that channel, but MC may not work that way.

Anyway, here is what it shows and would be nice to have on meshcore one:

<img width="603" height="1311" alt="Image" src="https://github.com/user-attachments/assets/29137f80-9c34-4b56-851f-0af56a27aa44" />

