Release v3.0.2-alpha: Fix Kafka topic error handling

- Improved error handling for non-existent Kafka topics
- Fixed failing tests related to topic existence validation
- Enhanced error specificity when querying topic metadata
- All tests now pass (17/17)

Merge pull request #1 from keaz/codex/complete-kafka-cli-tools-implem…

…entation

Add Kafka admin operations and improve cluster visibility

Shell autocompletion

Consumer group lag

Fourth alpha release

Third alpha release

Second alpha release

Initial alpha release