update generator project to be aware of UseCases and treat them same as Examples

introduction of Use cases change name of files ExampleX - UseCase1
see diff at https://github.com/checkstyle/checkstyle/pull/20615

https://github.com/checkstyle/test-configs/tree/main/LocalFinalVariableName use to have 3 Examples.
after this update there will be 2 only: Example1 and Example3.
Example2 is renamed to UseCase1.

Required:
update generator project to be aware of UseCases and treat them same as Examples.

Start by inspecting the generator project and compare its current Example handling with the linked Checkstyle pull request and the LocalFinalVariableName configuration. Verify how Example1, Example3, and the renamed UseCase1 are discovered and processed; done means UseCases are treated the same as Examples without losing either remaining Example.

Written by the indexing model from the issue text.