refactor: Introduce build aggregator #548

Job	Run time
Detect relevant changed files	5s
Run cargo-udeps	1m 52s
Build/Publish arm64 Image	6m 24s
Build/Publish amd64 Image	7m 49s
Package/Publish 0.0.0-pr814 Helm Chart	48s
Publish/Sign 0.0.0-pr814 Index	50s
Run OpenShift Preflight Check for 0.0.0-pr814-amd64	33s
Run OpenShift Preflight Check for 0.0.0-pr814-arm64	27s
Generate Provenance for 0.0.0-pr814 (oci.stackable.tech) / detect-env	4s
Generate Provenance for 0.0.0-pr814 (quay.io) / detect-env	6s
Generate Provenance for 0.0.0-pr814 (oci.stackable.tech) / generator	28s
Generate Provenance for 0.0.0-pr814 (quay.io) / generator	28s
Finished Build and Publish	2s
Generate Provenance for 0.0.0-pr814 (oci.stackable.tech) / final	3s
Generate Provenance for 0.0.0-pr814 (quay.io) / final	3s
Failure Notification	-1s
	20m 1s

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