[Sea of Claws] Expand Vehicle Roles and Crew Tests

[Forien]

Current system of "Single Test has Single Role and Single Actor" no longer will suffice in Sea of Claws.

In Sea of Claws, a specific Crew Test, for example Navigation Test, can be performed by multiple roles, for example Captain, Deckhand, Helm, Lookout, Navigator.

And any specific Role, for example Lookout or Deckhand, can have multiple Actors assigned to it.

Specification

Users should be able to setup a Role, which consists of Name, Test Skill and Duties. There are some example roles on page 121. Optionaly, there could be a limit to "how many people can occupy the role", although book only suggests that and does not specify anything.

When setting up a Crew Test, it should be possible to mark which Roles are allowed to test that, as well as selecting which Role is the most important one, so called Vital Role.

Vital Role's results double, so any SLs and negative SLs are doubled.

Then, any Actor can belong to any Role. Single Actor should be able to belong to multiple roles, as well as multiple Actors should be able to occupy the same Role.

When Crew Test is performed, all Actors in appropriate Roles should perform their own Tests and Crew Test would use cumulative total, while respecting Vital Role's bonus.