Feature/module and meta constraints namespace prefixes

[david-waltermire]

Committer Notes

This PR adds support for prefix to namespace bindings for use in Metapath for supporting multiple models and Metapath types and functions with colliding names.

This PR will:

• Allow qualified names to be used that reference a namespace URI by prefix. This is needed to 1) support the composition of models that have naming conflicts, and 2) support data types, functions and variables declared in user defined namespaces.
• Provide a path for implementations to support inline Metapath functions to be declared and used in user defined namespaces.

This PR builds on PR #659 and #570, which should be merged first.

All Submissions:

• Have you followed the guidelines in our Contributing document?
• Have you checked to ensure there aren't other open Pull Requests for the same update/change?
• Have you squashed any non-relevant commits and commit messages? [instructions]
• Do all automated CI/CD checks pass?

Changes to Core Features:

• Have you added an explanation of what your changes do and why you'd like us to include them?
• Have you written new tests for your core changes, as applicable?
• Have you included examples of how to use your new feature(s)?
• Have you updated all website](https://pages.nist.gov/metaschema) and readme documentation affected by the changes you made? Changes to the website can be made in the website/content directory of your branch.

[david-waltermire]

This should be merged using "rebase and merge" to avoid merge conflicts in downstreams.

[iMichaela]

This should be merged using "rebase and merge" to avoid merge conflicts in downstreams.

Thank you, @david-waltermire . Do you mind including in this PR the fix for the README.md - the link [✖] https://www.nist.gov/people/david-waltermire points to your page that does not exist anymore and direct it to a valid page you have? In the meantime I'll work on permissions. I am doing my best to expedite it.

[david-waltermire]

I am not sure what the README should say. Feel free to update it. I can rebase this PR once the underlying repo issues are fixed.

[iMichaela]

@david-waltermire -- please note the PR #659 this PR depends on needs to be rebased first. Also, this PR will need to be rebased to address the conflicts.