chore: Add GitHub Action for CI Unit Tests

[Rodebrechtd]

Summary

This pull request makes the following changes:

• Add GitHub Action for CI Unit Tests
• Comment out failing Controller unit test; will address in a separate issue

Explain the motivation for making these changes. Does this pull request implement a feature or fix a bug? Is it a docs change or a typo fix?

Improve CI process by adding unit tests at main pull request

Task/Issue reference

Closes: #279

[bgins]

Could we skip the controller tests instead of commenting them out? It's possible with chai to skip a describe test suite by adding a .skip. We could change

lilypad/hardhat/test/controller.ts

Line 43 in f62cd3e

describe("Controller", () => {

to

describe.skip("Controller", () => { 

and the entire test suite will be skipped.

The benefit of skipping over commenting out is that skipped tests are still reported, which helps us to remember they are there.

[bgins]

Looks good! Thank you for taking this one on. Much appreciated! 🙏