Re-organize all projects (#4166)

Content.Client/Rotatable/RotatableComponent.cs

@@ -0,0 +1,12 @@
+#nullable enable
+using Content.Shared.Rotatable;
+using Robust.Shared.GameObjects;
+
+namespace Content.Client.Rotatable
+{
+    [RegisterComponent]
+    [ComponentReference(typeof(SharedRotatableComponent))]
+    public class RotatableComponent : SharedRotatableComponent
+    {
+    }
+}