[rocketmq-connect-jdbc] jdbc-sink-connector support divide task by queue

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**BUG REPORT**

1. Please describe the issue you observed:

- What did you do (The steps to reproduce)?

- What did you expect to see?

- What did you see instead?

2. Please tell us about your environment:

3. Other information (e.g. detailed explanation, logs, related issues, suggestions how to fix, etc):

**FEATURE REQUEST**

1. Please describe the feature you are requesting.

2. Provide any additional detail on your proposed use case for this feature.

2. Indicate the importance of this issue to you (blocker, must-have, should-have, nice-to-have). Are you currently using any workarounds to address this issue?

4. If there are some sub-tasks using -[] for each subtask and create a corresponding issue to map to the sub task:

- [sub-task1-issue-number](example_sub_issue1_link_here): sub-task1 description here,
- [sub-task2-issue-number](example_sub_issue2_link_here): sub-task2 description here,
- ...

The issue names only the rocketmq-connect-jdbc JDBC sink connector and provides no files, tests, or entry points. Start by locating that connector's task and queue-handling implementation; define completion as supporting task division by queue, with corresponding behavior verified by the connector's existing test setup.

Written by the indexing model from the issue text.