[Feature][Sort] Add metric system for Kafka connector v1.18

[PeterZh6]

Description

Related issue: #11494
Add org.apache.inlong.sort.base.metric.SourceExactlyMetric metric instrumentation for the newly-added connector.

Use case

No response

Are you willing to submit PR?

• Yes, I am willing to submit a PR!

Code of Conduct

• I agree to follow this project's Code of Conduct

[vernedeng]

The Tencent Rhino-bird 2024 is finished, and this issue will be closed.