convert jest tests to child_process run script

[jbolda]

Motivation

The current set of jest based tests seem to be fragile, and failure occurrences invariably do not provide enough information to debug. In reality, we just want to invoke and run CTA and check the state of fs afterwards. This switches to a pure script with a bit of Github Action log collapsing to make it easy to see exactly what is running and the return.

What kind of change does this PR introduce? (check at least one)

• Bugfix
• Feature
• Docs
• New Binding Issue #___
• Code style update
• Refactor (tests)
• Build-related changes
• Other, please describe:

Does this PR introduce a breaking change? (check one)

• Yes. Issue #___
• No

The PR fulfills these requirements:

• When resolving a specific issue, it's referenced in the PR's title (e.g. fix: #xxx[,#xxx], where "xxx" is the issue number)
• A change file is added if any packages will require a version bump due to this PR per the instructions in the readme.

If adding a new feature, the PR's description includes:

• A convincing reason for adding this feature (to avoid wasting your time, it's best to open a suggestion issue first and wait for approval before working on it)

Other information: