A script that wraps the run of the project test suite and starts stripe-mock with a custom OpenAPI + fixtures bundle if one was found in the appropriate spot (see `pathSpec` below).
The script passes all its arguments to a Go's test command, and defaults to `./...`. For example, both of the following are valid invocations:
go run test_with_stripe_mock.go go run test_with_stripe_mock.go ./charge
The reason that we need a separate script for this is because Go's testing infrastructure doesn't provide any kind of global hook that we can use to do this work in only one place before any tests are run.