Implement inventory system with item management and pickup functionality

GameCore/Movement/JumpSystem.cs

@@ -1,6 +1,7 @@
 using GameCore.Attributes;
 using GameCore.ECS;
 using GameCore.ECS.Interfaces;
+using GameCore.Events;
 using GameCore.Input;
 using GameCore.Physics;
 using Attribute = GameCore.Attributes.Attribute;
@@ -26,6 +27,7 @@ public class JumpSystem : ISystem
             {
                 var jumpHeight = attributes.GetValue(Attribute.JumpHeight);
                 velocity.DesiredVelocity.Y = (float)System.Math.Sqrt(2f * world.Config.GravityStrength * jumpHeight);
+                world.PublishEvent(new PlayerJumpEvent());
             }
         }
     }