refactor: Introduce build aggregator #550

Job	Run time
Detect relevant changed files	4s
Run cargo-udeps	1m 58s
Build/Publish amd64 Image	7m 55s
Build/Publish arm64 Image	7m 21s
Package/Publish 0.0.0-pr814 Helm Chart	41s
Publish/Sign 0.0.0-pr814 Index	49s
Run OpenShift Preflight Check for 0.0.0-pr814-arm64	30s
Generate Provenance for 0.0.0-pr814 (oci.stackable.tech) / detect-env	6s
Generate Provenance for 0.0.0-pr814 (quay.io) / detect-env	3s
Run OpenShift Preflight Check for 0.0.0-pr814-amd64	27s
Generate Provenance for 0.0.0-pr814 (quay.io) / generator	31s
Generate Provenance for 0.0.0-pr814 (oci.stackable.tech) / generator	35s
Finished Build and Publish	4s
Generate Provenance for 0.0.0-pr814 (quay.io) / final	3s
Generate Provenance for 0.0.0-pr814 (oci.stackable.tech) / final	2s
Failure Notification	0s
	21m 9s

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