…aces and to simplify and align implementations.

* Completed code to support Metapath array construction.
* Implemented array postfix and unary lookups.
* Cleaned up ISequence implementations, moving getFirstItem to be a method member. Added a utility function to convert a sequence into an array member.
* Added support for the following Metapath functions:
  - array:get
  - array:put
  - array:append
  - array:subarray
  - array:remove
  - array:insert-before
  - array:join
  - array:head
  - array:tail
  - array:reverse
  - array:flatten
* Fixed spotbugs null check warnings
* Cleaned up some Javadocs.
* Incorporated changes based on CodeRabbit review.
* normalized line endings

* Added initial implementation of the 'metaschema-cli metapath list-functions' command.
* Added a better means to collect the metaschema-related CLI commands for reuse.

… returns the root node when getValue is called.

- Support for map construction.
- Added support for maps in function call, postfix and unary lookups.
- Added support and unit tests for the following Metapath functions:
  - map:get
  - map:merge
  - map:entry
  - map:size
  - map:keys
  - map:contains
  - map:find
  - map:put
  - map:remove
- Added missing characteristics on a number of existing Metapath functions.
- Cleaned up a bunch of PMD warnings.

…function signatures now instead of the Java class name.

… use. Improved abstract CLI validation commands to provide more options for model detection.

…d to distinguish provided model bindings.

- Added support for capturing parsed location information in bound objects. This will be useful for producing context for validation results.
- Fixed bugs causing the ordering of generated classes to be chaotic. Also fixed bugs causing binding configurations to match based on minor URI differences caused by inconsistent behavior between file and path URI productions.
- Updated Metaschema module binding to incorporate latest module changes.
- Added support for exposing parse locations in validation results.
- Added support for producing Static Analysis Results Interchange Format (SARIF) results based on schema and constraint validation results.
  - Added SARIF CLI output option to validate command.
  - Added support for including rules and artifact information in SARIF results. SARIF files now work on commonly available viewers.
  - Added constraint formal-name and description to SARIF output, allowing human readers to better understand why the result was produced.
  - Added a GUID to SARIF output for each rule.
- Adjusted constraint result production to allow for pass results to be produced, which supports producing SARIF result that include both pass and fail statuses using an API-level configuration.
- Added methods to handle making URIs relative to another URI.
- Ensured proper handling of Metapath errors during validation. Resolves usnistgov/oscal-cli#292
- Fixed compile and PMD warnings.
- Added some Javadocs.