chore: Use Rust implementation of Kafka source/sink in E2E tests

[BulkBeing]

• Use Rust implementation of numaflow with builtin Kafka source/sink for E2E tests
• Remove Kafka E2E tests with Redis as ISB

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.40%. Comparing base (6d673fd) to head (1bcd7a0).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2677      +/-   ##
==========================================
- Coverage   73.48%   73.40%   -0.08%     
==========================================
  Files         412      412              
  Lines       71748    71748              
==========================================
- Hits        52723    52666      -57     
- Misses      17908    17965      +57     
  Partials     1117     1117              

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[vigith]

LGTM

Let's wait for 1.5 release to merge this in? 1.5 is on golang data-plane