[Feature] how to synchronizing data from pulsar to paimon

### Search before asking

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

### Motivation

we are using paimon now, and we need to sync data from pulsar to paimon, however, I could not find any api for pulsar in paimon, how can I do this, just can change source code of paimon ?

### Solution

_No response_

### Anything else?

_No response_

### Are you willing to submit a PR?

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

The issue mentions synchronizing data from Pulsar into Paimon but names no files, tests, API entry points, or implementation approach. First clarify whether a supported connector or a Paimon source-code change is expected; completion criteria are not defined in the issue.

Written by the indexing model from the issue text.