camelCase proto field names generated as lowercase

[jjagged]

This is another example of us not using proto best practices (similar to #284 and #285). Camel case proto fields are generated as fully lowercase in protokt. Full example here

message HelloRequest {
  string message = 1;
  string message_two = 2;
  string messageThree = 3;
}

generates to

@GeneratedMessage("helloworld.HelloRequest")
public class HelloRequest private constructor(
  @GeneratedProperty(1)
  public val message: String,
  @GeneratedProperty(2)
  public val messageTwo: String,
  @GeneratedProperty(3)
  public val messagethree: String,
  public val unknownFields: UnknownFieldSet = UnknownFieldSet.empty()
)

It is maybe not a bug per se, but it is inconsistent with how protobuf-java and protobuf-kotlin generates code so I thought I'd report it.