Add permission system

## Permissions we need

Vessel:
- visible
- view
- command
- owner

Flight:
- view
- command

Unauthorized permission, is the permission everyone has even if not logged in (initially all vessels have owner unauthorized as there is no owner)

## New controllers
- Delete Vessel/Flight
- Add user to flight/vessel
- Remove user from flight/vessel
- Assign unauthrized permission
- Get share code -> vessel/flight and permission
- Use share code
-