remove mention of Dev Spaces from the Che Operator CRD (and re-add it downstream when running sync*.sh)

As seen in https://github.com/eclipse-che/che-operator/pull/1369, we refer to Dev Spaces (and previously CRW) in the Che Operator CRD.

This is weird, since we could be adding the DS content when transforming Che Operator upstream into the mid/downstream content we need for the product.

Today, we just COPY the file:

https://github.com/redhat-developer/devspaces-images/blob/devspaces-3-rhel-8/devspaces-operator-bundle/build/scripts/sync-che-olm.sh#L351

But we should be inserting/replacing content at that time.

So the task here:

• in api/v1/checluster_types.go and various occurences of */org_v1_che_crd.yaml, remove mention of Dev Spaces / CRW
• in sync-che-olm.sh#L351 replace Che with Dev Spaces.
• Re-add the link to the future product page at https://developers.redhat.com/products/openshift-dev-spaces/overview