test(remote_wal): add kafka image for integration test

[niebayes]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

Added a Kafka image for integration test. This image is powered by testcontainers with which you can start a Kafka container. When the container is started, you can assume there's a Kafka cluster ready to be used.

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR does not require documentation updates.

Refer to a related PR or issue link (optional)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.72%. Comparing base (2e686fe) to head (96ea2e7).
Report is 325 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3074      +/-   ##
==========================================
+ Coverage   85.47%   85.72%   +0.24%     
==========================================
  Files         801      813      +12     
  Lines      129967   133092    +3125     
==========================================
+ Hits       111095   114096    +3001     
- Misses      18872    18996     +124     

[WenyXu]

Let's convert it to a draft and add it when needed.