How to set up LTI 1.3 authentication for Jupyterhub

[danielmcquillen]

@IvanYingX Thanks. Great stuff. I’m looking forward to going through it once I get get my cluster set up and spawning notebooks correctly (Hoping for expect help in Spawn failed: Timeout even when start_timeout is set to 3600 seconds - #18 by danielmcquillen)