gRPC - consider exposing AbstractStub.withCompression(String) via GrpcClientConfiguration

[mkouba]

Right now, a user needs to modify each injected stub manually, e.g.

@Singleton
public class MyBean {

    private final MutinyHelloGrpc.MutinyHelloStub client;

    public MyBean(@GrpcClient("hello") MutinyHelloGrpc.MutinyHelloStub stub) {
       this.client = stub.withCompression("gzip");
    }

It might make sense to allow users to specify the default value in the application.properties file instead:

quarkus.grpc.clients.hello.compression=gzip

[quarkus-bot]

/cc @cescoffier, @michalszynkiewicz