[improve] Reuse the internal writer/reader under the same system topic

[poorbarcode]

Search before asking

• I searched in the issues and found nothing similar.

Motivation

So far, Pulsar creates an internal producer to send the Pulsar Event and close it after it is sent immediately.

The following Profile was captured when doing much topic creation and deletion.

Solution

We can reuse the same writer/reader to improve the performance.

Alternatives

No response

Anything else?

No response

Are you willing to submit a PR?

• I'm willing to submit a PR!