Implement Cargo Administration

[paulrayner]

Implement UI related to cargo booking and routing. This includes forms to:

• List cargos
• Cargo details
• New cargo
• Change destination
• Assign to route

This is a placeholder issue, since there is a lot of work here. I would start with breaking out List Cargos into a separate issue and working on that one. Then do the same for Cargo Details, and so on. The other ones will require implementing at a minimum a fake version of the Routing Service.

This is handled by BookingController in the .NET port.