define ship roles via added modules and allow multiple weapons

src/lib/core/EntityAdmin.cpp

@@ -18,6 +18,11 @@ entt::entity EntityAdmin::createEntity()
     return m_registry.create();
 }
 
+entt::entity EntityAdmin::createModuleEntity()
+{
+    return m_registry.create();
+}
+
 bool EntityAdmin::isValid(entt::entity entity) const
 {
     return m_registry.valid(entity);