helm chart: add annotations and labels globally

[dmpe]

Is your feature request related to a problem? Please describe.

Currently, you can add annotations and labels at each resource individually. What I would like to see is ability to add labels and annotations globally, i.e. these would then be applied at every single k8s resource.

Describe the solution you'd like

global:
  annotations: []  
  labels: []

Environment details (remove if not applicable):

• Kubernetes version: 1.21
• Cloud-provider/provisioner: on-prem vmware
• cert-manager version: 1.8
• Install method: e.g. helm/static manifests: helm chart

/kind feature

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[jetstack-bot]

@jetstack-bot: Closing this issue.

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