Image replacement for more/any fields in CRDs?

I want skaffold to be able to replace the `image` field in restate.dev/v1beta1/RestateDeployment CRD, just like it does for Deployments and Knative services. Can I do it would changing skaffold code? If not, I think it would be nice to impl this flexibility so that skaffold could support more/any fields in more/any CRDs when user needs.

FYI, my RestateDeployment CR is like

```yaml
apiVersion: restate.dev/v1beta1
kind: RestateDeployment
metadata:
name: my-restate-deployment
spec:
restate:
register:
cluster: restate-test
deploymentMode: knative
knative: {}
template:
spec:
containers:
- image: my-restate-deployment
ports:
- name: h2c
containerPort: 8080
```

The issue names no file, test, or entry point. Start by tracing Skaffold's existing image replacement behavior for Deployments and Knative services, then compare it with the supplied RestateDeployment CRD; done means the requested image field can be replaced for this CRD without breaking existing support.

Written by the indexing model from the issue text.