Add a python interface (`revng.profile`) for interacting with the rev.ng
infrastructure as a whole; either through the CLI (`CLIProject`) or the
GraphQL API (`DaemonProject`).
revng.model.__init__ would dynamically import the latest version of
the model when imported, however this would break IDE hints as the
classes would not be properly detected. Instead we now manually
specify the last version in the __init__.py file.
Giacomo Vercesi