Inspector UI that could help us observe changes without devtools

[Gozala]

If you do not have devtools open from the page load it's impossible to see messages making it difficult to observe system when we're trying to figure out why things aren't working as expected.

[bfollington]

Some experiments with recording the underlying data in https://github.com/commontoolsinc/labs/tree/fix/ws-timeout related #729

Independently, I am working on the visualization of this data

[Gozala]

The #729 morphed into this so I'm working on both

[bfollington]

We're aiming low-ish for this one, basically a streaming log of messages.