What problem does this PR solve?

Issue Number: close #832

What is changed and how it works?

confluent-kafka-go is a lightweight wrapper around librdkafka, a finely tuned C client.

Notice

1. confluent-kafka-go only supports async producer, we implement sync producer by channel.
2. confluent-kafka-go does not support mock producers.

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No code

Questions

Will it cause performance regression or break compatibility?

Do you need to update user documentation, design documentation or monitoring documentation?

Release note

`None`.