Add an option to omit empty array match sub-changes and empty array changes

[nikitawootten-nist]

User Story:

As an OSCAL deep diff user analyzing comparison results by hand, I would like a way to omit unchanged array and array item records from the json comparison output for all or specific paths (e.x. omit unchanged control parameters, but keep unchanged control parameters) to make it easier to read.

Goals:

• A configuration option that omits empty array_changed from an object
• A configuration option that omits empty subChanges array items from an object

Dependencies:

N/A

Acceptance Criteria

• readme documentation affected by the changes in this issue have been updated.
• A Pull Request (PR) is submitted that fully addresses the goals of this User Story. This issue is referenced in the PR.
• The CI-CD build process runs without any reported errors on the PR. This can be confirmed by reviewing that all checks have passed in the PR.

{The items above are general acceptance criteria for all User Stories. Please describe anything else that must be completed for this issue to be considered resolved.}