refactor: Introduce build aggregator #312

Job	Run time
Detect relevant changed files	6s
Build/Publish amd64 Image	9m 11s
Build/Publish arm64 Image	5m 27s
Run cargo-udeps	2m 35s
Package/Publish 0.0.0-pr852 Helm Chart	35s
Publish/Sign 0.0.0-pr852 Index	42s
Run OpenShift Preflight Check for 0.0.0-pr852-amd64	30s
Run OpenShift Preflight Check for 0.0.0-pr852-arm64	33s
Generate Provenance for 0.0.0-pr852 (quay.io) / detect-env	3s
Generate Provenance for 0.0.0-pr852 (oci.stackable.tech) / detect-env	3s
Generate Provenance for 0.0.0-pr852 (oci.stackable.tech) / generator	35s
Generate Provenance for 0.0.0-pr852 (quay.io) / generator	23s
Generate Provenance for 0.0.0-pr852 (quay.io) / final	2s
Finished Build and Publish	9s
Generate Provenance for 0.0.0-pr852 (oci.stackable.tech) / final	4s
Failure Notification	0s
	20m 58s

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