add tracing for performance profiling

src/lib/ecs/system/ScrapSystem.cpp

@@ -4,6 +4,7 @@
 #include "EntityAdmin.h"
 #include "PositionComponent.h"
 #include "ScrapDataComponent.h"
+#include "tracing.h"
 
 ScrapSystem::ScrapSystem(EntityAdmin& admin)
     : m_admin(admin)
@@ -17,6 +18,7 @@ entt::entity ScrapSystem::spawn(QVector2D position, int amount, Tick despawnAt)
 
 void ScrapSystem::tickDespawn(Tick currentTick)
 {
+	TRACE();
     std::vector<entt::entity> expired;
     m_admin.forEach<DespawnAtComponent>(
         [&expired, currentTick](entt::entity e, DespawnAtComponent& d)
@@ -54,3 +56,4 @@ std::vector<ScrapInfo> ScrapSystem::allScrapInfo() const
         });
     return result;
 }
+