Initial editor commit

- Add Entity Tree View used to select entities to be modified
- Add Entity View used to Add/Remove/Edit Components of the Entity
- Add Asset View which lists all available assets

CopiumEngine/src/copium/ecs/System.h

@@ -22,5 +22,22 @@ namespace Copium
 
     virtual void RunEntity(Entity entity, Components&... components) {};
     virtual void RunEntity(const Signal& signal, Entity entity, Components&... components) {};
+
+
+    // TODO: Not sure if this is the way entities should be validated
+    std::set<EntityId> loggedEntities;
+    template <typename... Components>
+    bool ValidateEntity(Entity entity)
+    {
+      if (entity && entity.HasComponents<Components...>())
+      {
+        loggedEntities.erase(entity);
+        return true;
+      }
+      if (loggedEntities.find(entity) == loggedEntities.end())
+        CP_WARN("Invalid Entity");
+      loggedEntities.emplace(entity);
+      return false;
+    }
   };
 }