Engine creator helper function

[augustehirth]

Add a helper function to create a virtual engine with a noisy simulator.

[dstrain115]

Are you going to expose this in the init files as well so that you don't have to specify the whole package?

[augustehirth]

Great points, ty. I think everything's fixed..

[mpharrigan]

API looks nice to me. This could be a good candidate for wrapping in a cg.workflow.SimulatedProcessorRecord subclass as a follow-up.

[augustehirth]

@mpharrigan The CI checks are onto the trickery. How to best evade this?

[mpharrigan]

all the test failures are about qiskit??? seems unrelated

for coverage: you can add

# coverage: ignore

to the block (may have to try exactly where to put it. test with check/pytest-changed-files-and-incremental-coverage

[mpharrigan]

for the typecheck you can add it to the list of ignored 3rd party modules in mypy.ini

edit: or add a type: ignore comment to that line

[mpharrigan]

@dstrain115 does this LGTY?

[dstrain115]

Yes, looks fine to me.