Introduce Kafka topic init task

[nscuro]

Description

Adds a new init task that creates all required topics using their respective default configuration during startup.

This replaces the need for a separate init container (i.e. redpanda-init in our docker-compose.yml: https://github.com/DependencyTrack/hyades/blob/008c3a1b024969a159de085d5ca6b464147faa9a/docker-compose.yml#L251-L273).

The creation of topics is also faster because it can be done in a single batched request, vs. 10s of repetitive CLI invocations.

This init task is disabled by default for now, since it's not meant to be used for production deployments. The idea is to build on this work, and allow users to customize the default topic configurations (e.g. via env vars or config files).

Addressed Issue

Relates to DependencyTrack/hyades#1195

Additional Details

N/A

Checklist

• I have read and understand the contributing guidelines
• This PR fixes a defect, and I have provided tests to verify that the fix is effective
• This PR implements an enhancement, and I have provided tests to verify that it works as intended
• This PR introduces changes to the database model, and I have updated the migration changelog accordingly
• This PR introduces new or alters existing behavior, and I have updated the documentation accordingly

[codacy-production]

Coverage summary from Codacy

See diff coverage on Codacy

Coverage variation	Diff coverage
✅ -0.26% (target: -1.00%)	❌ 53.85% (target: 70.00%)

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (b0bbd51)	22142	18303	82.66%
Head commit (a8556fb)	22288 (+146)	18365 (+62)	82.40% (-0.26%)

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#943)	195	105	53.85%

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