JWT Permissions

[caleblloyd]

I started reviewing #1 and thought it might be easier to send this suggestion

This Splits Server and Client connections - this way the Server connection doesn't need permissions but the Client connection can use fine-grained permissions

Instead of storing the JWT and Seed in a cookie, it is requested from the API every time a client needs to make a connection. This makes it a little easier to develop, because creds are refreshed on reload instead of on logout/login.

It also adds a react hook for useClientNatsCon to split out the logic where the client gets a NATS connection. A side effect was that had to be added as a dependency to all of the useEffect blocks that consume it, and callbacks that consume it had to be switched to useCallback with dependencies also.