Implement template versioning. #7634
Description
Description
Continue with features pending on previous release codegen with OAS 3, we're going to add template versioning which basically is having multiple versions of the same template, as described on #6077 this will help to avoid issues on upgrade.
We need to keep in mind that templates will be placed on swagger codegen generator repo, but from the options to handle this feature will be used from swagger-codegen-climodule.
Swagger-codegen version
3.0.0