[Feature] Kafka debezium json supports automatic discovery of primary keys

### Search before asking

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

### Motivation

kafka debezium json supports automatic discovery of primary keys， help us automatically create a table with a primary key without specifying the primary key

### Solution

_No response_

### Anything else?

_No response_

### Are you willing to submit a PR?

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

Start by tracing the Kafka Debezium JSON ingestion path and the automatic table-creation entry point; the issue does not name specific files or tests. Determine how Debezium primary-key information is represented and define the table-creation behavior before implementation. Done means a Kafka Debezium JSON record can create a table with its primary key discovered automatically.

Written by the indexing model from the issue text.