encoding/openapi: CEL (Common Expression Language) support #4048
Description
A Kubernetes extension to OpenAPI allows it to specify validation rules in CEL. It would be great if we could translate
between CEL and native CUE validation expressions, at least for some subsets of CEL and CUE.
For extensions, and validation expressions outside CEL's semantics, it might be necessary to support a more generic attribute syntax, such as that proposed in #3797.