Command for data format conversion

[aj-stein-nist]

User Story:

As a Metaschema developer, in order to more effectively change between serialized JSON, XML, and YAML formats when prototyping models and document instances, I want a metaschema-cli command to convert between the different versions of a document instances between data format for different models dynamically so that I do not need to do it manually.

Goals:

• Take given Metaschema models in the module(s) and a document instance
• Convert between different data formats
• Without having pre-compiled bound model classes

Dependencies:

{Describe any previous issues or related work that must be completed to start or complete this issue.}

Acceptance Criteria

• All website and readme documentation affected by the changes in this issue have been updated. Changes to the website can be made in the docs/content directory of your branch.
• 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.}