Provision transporters with hubs

VesselDefinition.gd

@@ -11,6 +11,7 @@ extends Resource
 @export var hull_points: PackedVector2Array = PackedVector2Array([
 	Vector2(0, -22), Vector2(-14, 16), Vector2(14, 16),
 ])
+@export var fleet_eligible: bool = false
 @export var capabilities: PackedStringArray = []
 @export var component_scenes: Array[PackedScene] = []
 @export var base_stats: Dictionary = {}