[REQ] [Gradle plugin] Override CodegenConfigurator

[DmitryGlushkov]

Is your feature request related to a problem? Please describe.

In openapi-generator-gradle-plugin:
There is no way to override/ extend CodegenConfigurator in GenerateTask.
It is useful to have when you want to provide new configs via ClientOptInput or share some logic between different generators.

Describe the solution you'd like

New protected method createDefaultCodegenConfigurator wher I can provide a custom CodegenConfigurator.

Describe alternatives you've considered

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Additional context

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