refactor: Introduce build aggregator #269

Job	Run time
Detect relevant changed files	7s
Run cargo-udeps	2m 7s
Build/Publish arm64 Image	7m 19s
Build/Publish amd64 Image	8m 3s
Publish/Sign 0.0.0-pr776 Index	49s
Package/Publish 0.0.0-pr776 Helm Chart	47s
Run OpenShift Preflight Check for 0.0.0-pr776-arm64	25s
Run OpenShift Preflight Check for 0.0.0-pr776-amd64	37s
Generate Provenance for 0.0.0-pr776 (oci.stackable.tech) / detect-env	6s
Generate Provenance for 0.0.0-pr776 (quay.io) / detect-env	6s
Generate Provenance for 0.0.0-pr776 (oci.stackable.tech) / generator	26s
Generate Provenance for 0.0.0-pr776 (quay.io) / generator	30s
Generate Provenance for 0.0.0-pr776 (oci.stackable.tech) / final	4s
Finished Build and Publish	4s
Generate Provenance for 0.0.0-pr776 (quay.io) / final	2s
Failure Notification	0s
	21m 32s

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