Integrate with grpc interceptor?

[Joy-Panda]

Feature description: How to integrate with grpc interceptor？

Problem it solves or use case: Use like this (https://github.com/bufbuild/protoc-gen-validate/blob/main/java/pgv-java-grpc/src/main/java/io/envoyproxy/pgv/grpc/ValidatingServerInterceptor.java)

Examples or references: Use like this (https://github.com/bufbuild/protoc-gen-validate/blob/main/java/pgv-java-grpc/src/main/java/io/envoyproxy/pgv/grpc/ValidatingServerInterceptor.java)

Additional context: None!