feat(vocabulary): vocaulary for map types

[sanketshevkar]

Closes #735

Changes

• Modified generateDecoratorCommand to generate command-sets for map keys and values
• Modified validate in vocabulary.js to validate for missingTerms and Additional terms for map declarations, key and value.
• In concerto-core added helper methods to getNamespace for map keys and values and isMapDeclaration method for ScalarDeclaration

Flags

• Should have KEY VALUE as reserved constants in concerto?

Related Issues

• Issue Vocabulary support for Map Types in Concerto #735\

Author Checklist

• Ensure you provide a DCO sign-off for your commits using the --signoff option of git commit.
• Vital features and changes captured in unit and/or integration tests
• Commits messages follow AP format
• Extend the documentation, if necessary
• Merging to main from fork:branchname

[jonathan-casey]

Please provide a clear example of the bug the added 'else' branch fixes, in the form of a test case and a sample command, or remove the branch entirely if it is deemed a false positive.

[sanketshevkar]

Please provide a clear example of the bug the added 'else' branch fixes, in the form of a test case and a sample command, or remove the branch entirely if it is deemed a false positive.

Addressed.