[Feature] Support dryrun in compact procedure

### Search before asking

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

### Motivation

Users can evaluate the resource consumption of this compact by set dryrun

### Solution

_No response_

### Anything else?

_No response_

### Are you willing to submit a PR?

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

Start by locating the compact procedure and its existing option handling. Trace how a dry-run setting could evaluate resource consumption without executing the compact operation, then identify suitable coverage for that behavior. Done means users can request a dry run and receive the intended evaluation without changing data.

Written by the indexing model from the issue text.