refactor: extract dereference and validate steps into controller modules #193

Job	Run time
Detect relevant changed files	4s
Run cargo-udeps	1m 55s
Build/Publish amd64 Image	7m 0s
Build/Publish arm64 Image	5m 30s
Publish/Sign 0.0.0-pr783 Index	31s
Package/Publish 0.0.0-pr783 Helm Chart	26s
Run OpenShift Preflight Check for 0.0.0-pr783-amd64	16s
Run OpenShift Preflight Check for 0.0.0-pr783-arm64	15s
Failure Notification	0s
Finished Build and Publish	3s
	16m 0s

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