Add Batch Consumer

[sonnes]

No description provided.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 96.82540% with 6 lines in your changes missing coverage. Please review.

Project coverage is 98.48%. Comparing base (599750f) to head (37603db).

Files with missing lines	Patch %	Lines
xkafka/batch_consumer.go	95.93%	5 Missing ⚠️
xkafka/consumer.go	75.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #57      +/-   ##
==========================================
+ Coverage   98.03%   98.48%   +0.45%     
==========================================
  Files          46       48       +2     
  Lines        1067     1255     +188     
==========================================
+ Hits         1046     1236     +190     
+ Misses         21       19       -2     

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