feat(queue): integrate kafka

[vm-001]

Summary

Integrate Kafka as the ingestion queue.

Note that the sync mode would have significant latency and be even slower than the database.

[codecov]

Codecov Report

Attention: Patch coverage is 0.78125% with 127 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
pkg/queue/kafka/kafka.go	0.00%	127 Missing ⚠️

Flag	Coverage Δ
integration	?
unit	11.43% <0.78%> (-0.28%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
config/proxy.go	82.14% <100.00%> (-17.86%)	⬇️
pkg/queue/kafka/kafka.go	0.00% <0.00%> (ø)

... and 107 files with indirect coverage changes

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