Create FAQ for load testing with Cypress

[CypressCecelia]

I'm submitting a...

[ ] Bug report
[X] Content update
[ ] Process update (build, deployment, ... )

Type of bug / changes

Cypress in its current form is not suitable for load testing.

For load testing backend APIs, we've recommended things like Artillery.io.

You still run big loops in Cypress, but you’ll probably run out of browser memory.

Also nothing stopping you from bringing up multiple machines running Cypress testing the same systems simultaneously.

With all that said, we don’t recommend any of these, and they should used tool that is dedicated for load testing.

[acomito]

This would be a 🔥 feature