Clothing/item ECS & cleanup (#9706)

Content.Shared/Clothing/EntitySystems/ClothingSystem.cs

@@ -0,0 +1,39 @@
+using Content.Shared.Clothing.Components;
+using Robust.Shared.GameStates;
+
+namespace Content.Shared.Clothing.EntitySystems;
+
+public sealed class ClothingSystem : EntitySystem
+{
+    public override void Initialize()
+    {
+        base.Initialize();
+
+        SubscribeLocalEvent<SharedClothingComponent, ComponentGetState>(OnGetState);
+        SubscribeLocalEvent<SharedClothingComponent, ComponentHandleState>(OnHandleState);
+    }
+
+    private void OnGetState(EntityUid uid, SharedClothingComponent component, ref ComponentGetState args)
+    {
+        args.State = new ClothingComponentState(component.EquippedPrefix);
+    }
+
+    private void OnHandleState(EntityUid uid, SharedClothingComponent component, ref ComponentHandleState args)
+    {
+        if (args.Current is ClothingComponentState state)
+            component.EquippedPrefix = state.EquippedPrefix;
+    }
+
+    #region Public API
+
+    public void SetEquippedPrefix(EntityUid uid, string? prefix, SharedClothingComponent? clothing = null)
+    {
+        if (!Resolve(uid, ref clothing))
+            return;
+
+        clothing.EquippedPrefix = prefix;
+        Dirty(clothing);
+    }
+
+    #endregion
+}