Workspaces management self service

As a tenant admin, i would like to be able to manage workspaces from within the administration console :

- create new ws

- allocate memory to ws

- assign ws admin rights to users

- allow these operation to be done through an api admin

This is required because : we currently need to perform such tasks on a regular basis and require support to perform the tasks.

Furthermore, we have a need to push the ws administration along with ci / cd which would include the ability to create / destroy ad hoc environnments (which are managed through ws if we follow best practices) for setting up testings environnments