Show HN: KrotoDC – gRPC in Kotlin with Dataclasses

- A protoc plugin data class generator that can be used as a substitute for existing Java protobuf classes that need to be constructed by a builder (which isn't very kotlin-ish). - generates coroutine service base and stubs that use the generated classes as request/response types, allowing you to completely avoid using Java classes. - Since it also generates converter extension functions between the generated types and Java types, you can still easily use protobuf-specific features such as serialization. - Additionally provides Kotlin-specific features (optional fields as nullable, oneof fields as sealed classes).