Added interaction, hand, rigidbody dragging, picking up hammer

Assets/Plugins/Interaction/Runtime/Items/Slots.cs

@@ -0,0 +1,32 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+using Nothke.Interaction.Items;
+
+namespace Nothke.Interaction
+{
+    public interface ISlottable
+    {
+        string SlotTag { get; }
+
+        bool IsSlottable { get; }
+        void OnStartedPlacing(IHands hands);
+        void OnSlotted();
+
+        IItemReceivable SlottedIn { get; set; }
+
+        /// <summary>
+        /// Called before IsSlottable is nulled
+        /// </summary>
+        void OnRemovedFromSlot();
+    }
+
+    public interface IItemReceivable
+    {
+        string SlotTag { get; }
+
+        bool CanReceive(ISlottable slottable);
+        bool SetItemInSlot(ISlottable slottable);
+    }
+}