fix(charts/flux2,crds): crds.annotations got respected now

[roth-wine]

What this PR does / why we need it:

In the flux2 helm chart there is already the possibility to set the value crds.annotations. Unfortunately, this value is not used anywhere because the corresponding templates are missing in the crds. With this merge request I want to add templating to the generated crds so that this value can not only be set without meaning, but also so that the annotations in the crds can actually be customised.

Special notes for your reviewer:

Checklist

• [x] DCO signed
• [x] Chart Version bumped
• [x] helm-docs are updated
  • didn't change anything
• [x] Helm chart is tested
• [x] Update artifacthub.io/changes in Chart.yaml
• [x] Run make reviewable

[roth-wine]

Hey @haarchri, it seems like you responsible for this chart. What do you think about it?