Add ItemStatus for mopping (#13745)

* Add ItemStatus for mopping

Big QOL feature

* a

Content.Shared/Fluids/SharedMoppingSystem.cs

@@ -0,0 +1,39 @@
+using Robust.Shared.GameStates;
+using Robust.Shared.Serialization;
+
+namespace Content.Shared.Fluids;
+
+public abstract class SharedMoppingSystem : EntitySystem
+{
+    public override void Initialize()
+    {
+        base.Initialize();
+        SubscribeLocalEvent<AbsorbentComponent, ComponentGetState>(OnAbsorbentGetState);
+        SubscribeLocalEvent<AbsorbentComponent, ComponentHandleState>(OnAbsorbentHandleState);
+    }
+
+    private void OnAbsorbentHandleState(EntityUid uid, AbsorbentComponent component, ref ComponentHandleState args)
+    {
+        if (args.Current is not AbsorbentComponentState state)
+            return;
+
+        if (component.Progress.Equals(state.Progress))
+            return;
+
+        component.Progress = state.Progress;
+    }
+
+    private void OnAbsorbentGetState(EntityUid uid, AbsorbentComponent component, ref ComponentGetState args)
+    {
+        args.State = new AbsorbentComponentState()
+        {
+            Progress = component.Progress,
+        };
+    }
+
+    [Serializable, NetSerializable]
+    protected sealed class AbsorbentComponentState : ComponentState
+    {
+        public float Progress;
+    }
+}