[Feature][Connector-V2] Support blackhole sink

[litiliu]

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• I had searched in the feature and found no similar feature requirement.

Description

In case users want to drop the produced records for some reasons(maybe test their other nodes), a blackhole connector would be handy.

Usage Scenario

No response

Related issues

No response

Are you willing to submit a PR?

• Yes I am willing to submit a PR!

Code of Conduct

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

[davidzollo]

good job