Move solution and projects to src

src/Ryujinx.Common/Collections/IntrusiveRedBlackTreeNode.cs

@@ -0,0 +1,16 @@
+namespace Ryujinx.Common.Collections
+{
+    /// <summary>
+    /// Represents a node in the Red-Black Tree.
+    /// </summary>
+    public class IntrusiveRedBlackTreeNode<T> where T : IntrusiveRedBlackTreeNode<T>
+    {
+        internal bool Color = true;
+        internal T Left;
+        internal T Right;
+        internal T Parent;
+
+        public T Predecessor => IntrusiveRedBlackTreeImpl<T>.PredecessorOf((T)this);
+        public T Successor => IntrusiveRedBlackTreeImpl<T>.SuccessorOf((T)this);
+    }
+}