Initial public release

This initial release has the core functionalities to create a proper set of environments for a professional set up.
This includes:

• creation of databases for the envs
• creation of warehouses for the envs,
  even if by default we create a shared WH that is more suitable in the beginng
• creation of roles to grant RO or RW access to the envs
• creation of roles to provide mindful access to the core types of users
  (executor, developer and reader) that can be defined before a project is even started
• utilities to assign user to these roles or to new roles created later.