Pulsar Admin: expose the compression algoritm for "peek messages"

### Search before asking

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

### Motivation

When troubleshooting production enviroments it would be helpful to see with "peek message" the algorithm used for compression

### Solution

Dump the value when prossing the peek messages command

### Alternatives

_No response_

### Anything else?

_No response_

### Are you willing to submit a PR?

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