Update README with custom codec needed for usage in Connect #135
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The instructions for using vtprotobuf with Connect were incomplete - it is *required* to implement a custom gRPC-compatible codec a la Vitess because Connect internally uses the codec to directly serialize `Status` messages which do not have vtprotobuf helpers.
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The instructions for using vtprotobuf with Connect were incomplete - it is required to implement a custom gRPC-compatible codec a la Vitess because Connect internally uses the codec to directly serialize
Statusmessages which do not have vtprotobuf helpers.See https://github.com/connectrpc/connect-go/blob/main/protocol_grpc.go#L844-L846 and https://github.com/connectrpc/connect-go/blob/main/internal/gen/connectext/grpc/status/v1/status.pb.go