Add Cypress E2E tests

[bahmutov]

Let me find a moment

[RobertBroersma]

After reading @davidkpiano's article on CSS Tricks I tried it out in our React app with Jest. Works like a charm!

Great stuff!

Then I tried implementing it in Cypress, but I ran into issues with running Cyptess commands inside promises (I'm guessing because path.test returns a promise). Curious to see how you would go about this!

[rjdestigter]

I tried really hard to make this work with Cypress for intercepting network requests but no luck. It's also pretty verbose as you have to return a new Cypress.Promise in every test and even handler. You can check it out here https://github.com/rjdestigter/xstate-test-demo/tree/feature/cypress

[rjdestigter]

I actually got it to work by looking at how cypress-unfetch polyfills.