[JSON Logic] Part 1: JSON Logic Skeleton

[brennj]

This is a breakdown of https://github.com/remoteoss/json-schema-form/pull/28 to make it more digestible for review.

There will be multiple PRs:

• Adding JSON Logic's skeleton, with basic support for x-jsf-logic-validations. That is this PR.
• Add in x-jsf-logic-computedAttrs (with reference to values defined in x-jsf-logic.computedValues) support.
• General error handling.
• Fieldset support
• Conditional handling
• Inline rules for x-jsf-logic-computedAttrs support.

This PR:

• Adds the JSON Logic library.
• Sets up the plumbing of json-logic's implementation in a JSON schema to work on different object levels (the scopes).
• Adds the plumbing to use JSON logic during the runtime of a json-schema-form instance in createHeadlessForm.js
• Adds the logic to apply this at the yup level during the validation of the form.
• Adds a number of tests to express the ability to use JSON logic in a JSON Schema.

[brennj]

Hopefully this is ready for another look and a merge 👀

[brennj]

Looks good from my perspective - appreciate the changes! One suggestion that Sandrina made about the name of the jsonLogic fixtures file is still outstanding, I believe?

i know i seen this before but i cant find it again

[johnstonbl01]

Looks good from my perspective - appreciate the changes! One suggestion that Sandrina made about the name of the jsonLogic fixtures file is still outstanding, I believe?

i know i seen this before but i cant find it again

Sometimes it's easier to see all the comments from the Files changed view in my experience.