Added support additionalEnumTypeAnnotations, additionalModelTypeAnnotations, additionalOneOfTypeAnnotations properties to generator.

[altro3]

Added ability to set additionalProperties by gradle / maven plugin

[altro3]

@scprek this PR solve problem with new properties. After micronaut-openapi 6.12.4 we could set properties with block additionalProperties like this:

micronaut {
    openapi {
        client(file("swagger.yml")) {
            additionalProperties = [
                apiPackageName : "com.api.openapi.generated.api",
                useReactive : false,
                useAuth : true
            ]
        }
    }
}