Additional metaschemas

[alanisaac]

Related Issue:

Part of #735

These metaschemas have been tested against a version of the ocsf-validator based on this PR: ocsf/ocsf-validator#3. As a result, the following issues were found:

• Fixed is_array property for loggers #864
• Fixed requirement for compliance standards #859

These should be resolved before merging this PR.

Description of changes:

This PR implements additional metaschemas for:

• categories
• dictionary
• extension
• include
• profile

It also adds the following attributes:

• @deprecated
• sibling

And refactors the $include attribute to be more reusable, updating it as a result of #791 / #792.

Finally, it adds additional constraints on attribute names according to the spec, as well as a description to the existing object and event types (and all new metaschemas). Descriptions of types and properties are quoted or paraphrased from either the https://github.com/ocsf/ocsf-docs repository or from documentation in this repository.

[alanisaac]

@floydtree I think your comments are resolved, with the note that I have two follow-ups:

• the v for semver versions, and fixing existing usages
• making the requirement field required, and fixing existing gaps

[dkolbly]

Huge progress 🚀