Description:

Implement a manifest generation script that downloads the trust-manager Helm chart, renders it with OpenShift-specific configurations, patches labels, and splits into individual resource files for bindata embedding.

Notes:

• Helm chart options: defaultPackage.enabled=false etc. 
• Patch labels to use `app.kubernetes.io/managed-by: cert-manager-operator`
• Remove Helm-specific metadata
• Split combined manifest into individual resource files

Acceptance Criteria:

• Script downloads specified trust-manager Helm chart version (v0.20.2)
•  Manifests are patched with correct labels
• Script integrated into `make update-manifests` target
• Bindata generated successfully with `make update-bindata`
• "Bundle" CRD should be added inside cert-manager-operator's bundle.