MessageOptions in validate.proto uses a reserved extension number

The [Java control plane validate proto](https://github.com/envoyproxy/java-control-plane/blame/bbc2902c26fc04121bce19cb9a4d6678c4bebd93/api/src/main/proto/validate/validate.proto#L17) is using extension number 1072.

This extension number is [reserved for protokt](https://github.com/protocolbuffers/protobuf/blob/main/docs/options.md?plain=1#L258-L261) and causes incompatibilities between the envoy proto and protokt

This MessageOption should be implemented as a message like it is in `validate.proto`'s [FieldOptions](https://github.com/envoyproxy/java-control-plane/blob/main/api/src/main/proto/validate/validate.proto#L31) to prevent this issue