fix(*): expose model util methods, remove redundant type lookup

[sstone1]

Changes

• Expose certain ModelUtil methods and correct the TypeScript types for parseNamespace
• Remove a seemingly redundant codepath from ModelFile.getFullyQualifiedTypeName

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 master from fork:branchname

[sstone1]

Here, we get the FQN of the type. For import { Thing } from org.example and import org.example.Thing this is simple, as all the information to identify that the FQN of Thing is org.example.Thing.

For wildcard imports import org.example.* (which we want to drop), we have to visit the model manager and look through all wildcard imports for the namespace that contains the type we want.

Either way, we end up with the FQN of the type or we throw an error as the type cannot be resolved.

[sstone1]

All of this code is seemingly redundant - we use the FQN that we already have to locate the model file of the type, then we get the type, and then we get the FQN of the type (which we already know!) and return that.

[sstone1]

Maybe worth adding the motivation for this actually - yes, it will have a small performance benefit, but it actually enables you to get fully qualified names out of a ModelFile instance without having to have the imported models present in your ModelManager now that we have versioned imports and are looking at dropping wildcard imports.