[kotlin] Request for an XPath function as simple partial replacement of missing typeIs function

Is your feature request related to a problem? Please describe.
Because of a missing typeIf function in Kotlin, we are checking if the expected package of the type is imported, to come close to typeIs functionality. This is a verbose expression in XPath on the verbose parse tree and often needed.

Describe the solution you'd like
A function called hasImport with expected package as argument.
Example: /KotlinFile[pmd-kotlin:hasImport('javax.xml.xpath')]

Describe alternatives you've considered

• copy-paste every time: we want to avoid this and be more concise
• create a proper concise AST out of the kotlin parse tree: don't know how to do this, expected a lot of work
• create a real typeIs function for Kotlin: expected to be difficult and much work

Additional context

• This would be a small step to improve productivity of creating rule. Maybe one of the above could be next step.
• I do have a initial version in a my repo fork in the 'pmd/7.0.0x-kotlin/hasImport' branch.
• Not sure this is the way to go, so feedback requested.

The issue names no repository file or test; start with the reporter's pmd/7.0.0x-kotlin/hasImport branch and compare its initial implementation with the requested XPath example. Confirm the intended scope for a hasImport function; done means the example query works without the verbose import check.