refactor: Introduce build aggregator #547

Job	Run time
Detect relevant changed files	7s
Run cargo-udeps	2m 11s
Build/Publish amd64 Image	8m 2s
Build/Publish arm64 Image	7m 39s
Package/Publish 0.0.0-pr814 Helm Chart	45s
Publish/Sign 0.0.0-pr814 Index	35s
Run OpenShift Preflight Check for 0.0.0-pr814-amd64	27s
Generate Provenance for 0.0.0-pr814 (oci.stackable.tech) / detect-env	15s
Run OpenShift Preflight Check for 0.0.0-pr814-arm64	35s
Generate Provenance for 0.0.0-pr814 (quay.io) / detect-env	4s
Generate Provenance for 0.0.0-pr814 (quay.io) / generator	20s
Generate Provenance for 0.0.0-pr814 (oci.stackable.tech) / generator	40s
Generate Provenance for 0.0.0-pr814 (quay.io) / final	3s
Finished Build and Publish	4s
Generate Provenance for 0.0.0-pr814 (oci.stackable.tech) / final	4s
Failure Notification	0s
	21m 51s

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