Add a CLI experiment run to the pre check-in tests

[oreHGA]

📝 Provide a description of the new feature

What is the expected behavior of the proposed feature? What is the scenario this would be used?

Add a mock run of the cli to allow for end-to-end test of an eeg-notebook experiment. Code can live in the /test folder.

Eventually, these test methods should run successfully before PR completion.

• you can initialize a mock device with brainflow

---

If you'd like to see this feature implemented, add a 👍 reaction to this post.

[ErikBjare]

Perhaps https://github.com/NeuroTechX/eeg-notebooks/pull/88 can be continued.

[ErikBjare]

I fixed and merged #88, so now we have a framework for adding more tests at least.