Add Role management

[raplemie]

Role management

Added role create/update/delete with limited set of permissions, if a role contains permissions not in the list managed by the demo portal, the whole role is locked and cant be edited. (Preventing unexpected removal of permission and be unable to set it back)

Added role editing for users, directly in the users table:

Other notable changes

Role operations

Created the role operations similar to project operations so we can eventually move to admin-component-react if needed.

Tests

Added msw package to mock network instead of fetch request, while this caused me issue setting up, I think this is a good way of testing.

[raplemie]

Fixed loading on edit, scrolling on huge permissions list, and warning positionning so update/cancel are visible:

[kckst8]

LGTM. One minor comment