New commands CRUD for Teams private channel members and owners

[milanholemans]

Suggestion to create some new commands to do CRUD operations on Teams private channels. (added graph resource as hyperlink)

• Add user as member/owner to private channel
• Remove user from private channel
• List all members/owners of a private channel
• Update user role for private channel (member/owner)

If this suggestion makes it into a feature request, I'd love to work on it.

[waldekmastykarz]

Great suggestion! Let's start with creating separate issues with specs for all these commands and we can take it from there 👏

[milanholemans]

I'll create the issues later today.