Establish operator guide describing system setup as well as typical use-case scenarios

[achtsnits]

layout system setup variants providing different golden paths

• vCluster yes/no
• object storage solution minio/AWS S3/terraform provisioned S3 with 1 or 2 buckets to be automatically provisioned
• customization possibilities based on example with different subscription levels
• deployment specific configuration (e.g. dns names)

document typical use-case scenarios

• create a new workspace for a team with certain requirements (quotas)
• change requirements (quotas)

signoff: the different possibilities and options for workspace provisioning are properly described in the workspace documentation, so operators a guided to adopt (or even extend) the "golden paths" deployment pipelines