Rework ECS framework

- Add queue systems when adding/removing components and systems
- Add GlobalData to ECSManager, used to store data that is not specific
  to entities
- Add View class, used to for loop all entities that contains the given
  Components
- Rework how signaling works

CopiumEngine/src/copium/ecs/ComponentPoolBase.h

@@ -17,6 +17,7 @@ namespace Copium
 
     virtual size_t Size() = 0;
     virtual bool Erase(EntityId entity) = 0;
+    virtual void CommitUpdates() = 0;
     std::vector<EntityId>& GetEntities();
     const std::vector<EntityId>& GetEntities() const;
   };