SharedItemComponent (#3513)

* StorableComponent refactor

* ItemComponent refactor

* conflict fixes

* removes redundant null check

* removes redundant item throwing code

* fix conflicts

* ExplosionLaunchedComponent

Co-authored-by: metalgearsloth <comedian_vs_clown@hotmail.com>

Content.Client/GameObjects/Components/Storage/StorableComponent.cs

@@ -1,40 +0,0 @@
-using Content.Shared.GameObjects.Components.Storage;
-using Robust.Shared.GameObjects;
-
-namespace Content.Client.GameObjects.Components.Storage
-{
-    [RegisterComponent]
-    [ComponentReference(typeof(SharedStorableComponent))]
-    public class StorableComponent : SharedStorableComponent
-    {
-        private int _size;
-
-        public override int Size
-        {
-            get => _size;
-            set
-            {
-                if (_size == value)
-                {
-                    return;
-                }
-
-                _size = value;
-
-                Dirty();
-            }
-        }
-
-        public override void HandleComponentState(ComponentState? curState, ComponentState? nextState)
-        {
-            base.HandleComponentState(curState, nextState);
-
-            if (curState is not StorableComponentState state)
-            {
-                return;
-            }
-
-            _size = state.Size;
-        }
-    }
-}