Pulsar needs opentelemetry agent plugin for tracing

### Search before asking

- [X] I searched in the [issues](https://github.com/apache/pulsar/issues) and found nothing similar.

### Motivation

In order to get the ability of non-intrusive-tracing, pulsar should connect the opentelemetry agent

@tjiuming

### Solution

_No response_

### Alternatives

_No response_

### Anything else?

_No response_

### Are you willing to submit a PR?

- [ ] I'm willing to submit a PR!