Add @simulacrum/cypress-auth0 package

[dagda1]

Motivation

Add a @simulacrum/cypress-auth0 package that contains logIn and logOut commands

Approach

Because we can start the simulacrum server with npx when #113 lands the cypress commands feel like they should be in their own separate package.

The location and naming of things are open for debate but hopefully, the package itself is relatively simple.

TODO

• Make createSimulation idempotent, i.e. creating a simulation on the same port should not crash the whole simulation server.
• Fix logout, currently returns 500 and also make it idempotent so it does not fail if the scenario is not logged in.
• enable error logging from simulacrum
• Optional fix to provide a better way of maintaining state and remove the ugly ClientMap

[taras]

This is awesome. I'll let Charles and Jacob do a more thorough review.

[cowboyd]

Can we move as much as we can into before and beforeEach hooks?

[taras]

Other then the merge problems 👍

[cowboyd]

[jbolda]

I also went through and tried to get this working in the example branch, but was having issues with the wrap timing out. I am tempted to say it is a misconfiguration on my end though, and I think maybe we touch on these last things and merge it in. I can rebase my examples and try again.

@dagda1 need me to finish these things up? Let me know thoughts on these I can take make any adjustments if need be.

Also, side note, I don't see any destroying of simulations here, but I don't think we need to worry with the hash; they all get destroyed when the process finishes, right? Maybe file it under an "address in the future" consideration.