Re-organize all projects (#4166)

Content.Shared/Hands/IHandDeselected.cs

@@ -0,0 +1,51 @@
+#nullable enable
+using System;
+using JetBrains.Annotations;
+using Robust.Shared.Analyzers;
+using Robust.Shared.GameObjects;
+
+namespace Content.Shared.Hands
+{
+    /// <summary>
+    ///     This interface gives components behavior when they're held on a deselected hand.
+    /// </summary>
+    [RequiresExplicitImplementation]
+    public interface IHandDeselected
+    {
+        [Obsolete("Use HandDeselectedMessage instead")]
+        void HandDeselected(HandDeselectedEventArgs eventArgs);
+    }
+
+    public class HandDeselectedEventArgs : EventArgs
+    {
+        public HandDeselectedEventArgs(IEntity user)
+        {
+            User = user;
+        }
+
+        public IEntity User { get; }
+    }
+
+    /// <summary>
+    ///     Raised when an entity item in a hand is deselected.
+    /// </summary>
+    [PublicAPI]
+    public class HandDeselectedEvent : HandledEntityEventArgs
+    {
+        /// <summary>
+        ///     Entity that owns the deselected hand.
+        /// </summary>
+        public IEntity User { get; }
+
+        /// <summary>
+        ///     Item in the hand that was deselected.
+        /// </summary>
+        public IEntity Item { get; }
+
+        public HandDeselectedEvent(IEntity user, IEntity item)
+        {
+            User = user;
+            Item = item;
+        }
+    }
+}