Add ships and ship building

[DylanBozarth]

Just 1 test ship will be fine for now
The ship needs to have properties like power, attack, hull, shields etc.
The ships need to be shown building in the system side bar, that's this area pictured https://imgur.com/a/03RLkGj
The time that the ships need to complete with need to change with each type of ship so keep that in mind.
The ships also need to have a resource cost to build, we haven't implemented resources yet but keep it in mind when programming it.
Once the ships are done building they need to be added to the hangar of that system.