rabble

Related to #744 when we switch to swiftui.

I updated the handbook section, but it's not clear where scuttlebutt.nz is hosted. I reached out to mikey to see whats up with that.

scuttlebutt.nz is hosted on gitlab and mikey's the one managing it. Need to make PR.

This is inspired by @mixmix's version of this for patchbay from a few years ago.  

First code done so far by @mplorentz and design in progress by @Chardot

Needs still: Block / Unblock, posts containing markdown code snippits.

Assigned to @Chardot for design.

setup call with @Chardot and @rabble

This is dependent on #744 swift ui rewrite of the post display.

show the greyed out peers for past connections. Keep that cached so that when the user returns they see the old peers.