* Update codes to match specification
* Add changes to changelog
* go mod tidy
* Add unit tests for codes
* Update SetStatus methods to only filter Unset
* Update apitest code being tested
* Add otel/codes package to replace google.golang.org/grpc/codes
* Replace google.golang.org/grpc/codes with otel/codes
* Update opentracing bridge to use OTel codes
* Update semconv to use OTel codes
* Update SDK to convert from OTel codes to gRPC
* go mod tidy
* Add change to CHANGELOG
* Fix word from feedback