Initial Workspace CRD

[achtsnits]

Establish initial Workspace CRD specification allowing the Workspace controller to pick up the "defined desired state for a team" and provision the corresponding infrastructure resources

[achtsnits]

first version with specific platform config here -> https://github.com/EOEPCA/workspace/blob/main/setup/eoepca-demo/workspace/definition.yaml

example blueprint used a field "subscription" to specify different resource quotas to be established