Chore: Organize and restructure tests

[maverick1872]

Summary

This PR is a subset of the changes I've made on the #1989 PR. This is primarily a reorganization effort of Winston's tests to further clarify their intent and make more obvious what is being tested by what. I'm pretty positive there are still integration tests in the unit tests directory but it's at least moving things to be more explicit in nature.

Tech Notes (pre-emptive comments left on git diff)

• Some cleanup has been applied to the path.join usage throughout all tests. These changes were necessary due to the directory level segregation of tests. While updating them I leveraged top-level constants to make them easier to update down the line.
• Major re-organization to the logger.test.ts has been done. This was done to make the relationship between different tests more apparent.
• Coverage is only ran against unit tests.
• CI runs both unit test coverage and integration tests explicitly.
• TODO's added for tests that leverage a vows depedency that is no longer present.
• Introduced a .nycrc file for test's to retain a minimum level of coverage. This will help to ensure as new features are added the test coverage not continually degrade. I'd like to automate updating these values at some point but this is low priority.

[fearphage]

Thanks for the contribution! I had a few questions and suggestions.

[fearphage]

A few finishing touches

[wbt]

I'm not able to give this an in-depth review at this time, so I defer to those who can.

[DABH]

FWIW I'm okay with this once @fearphage gives the +1 :)