Triple OpenTelemetry support

[DMwangnima]

What would you like to be added:

Triple OpenTelemetry support:

1. Consider a better way to inject OpenTelemetry configurations to Triple protocol adaptation layer(/protocol/triple). For old Triple(/protocol/dubbo3), it retrieves configurations from config package directly. It is not a good design.

2. Implement OpenTelemetry Interceptor for Triple protocol. You can refer to this part(https://connectrpc.com/docs/go/observability). But there are some differences between Triple protocol and connect-go.

3. Tests implementation

For Triple protocol adaptation part, Please design tests to verify that OpenTelemetry configurations have been injected successfully and the necessary information in these configurations have been processed well. You can add tests in /protocol/triple/triple_test.go or some place more ideal.

For Triple protocol part, It is a good chance to learn the details about this protocol from outside to inside. You should write some unit tests to verify that OpenTelemetry Interceptor has been configured successfully and this functionality works well in the context of Triple protocol.

For dubbo-go-samples(Integration test), please refer to /tracing directory and write new tests using new API.