Move solution and projects to src

src/Ryujinx.Cpu/MemoryManagerBase.cs

@@ -0,0 +1,32 @@
+using Ryujinx.Memory;
+using System.Diagnostics;
+using System.Threading;
+
+namespace Ryujinx.Cpu
+{
+    public abstract class MemoryManagerBase : IRefCounted
+    {
+        private int _referenceCount;
+
+        public void IncrementReferenceCount()
+        {
+            int newRefCount = Interlocked.Increment(ref _referenceCount);
+
+            Debug.Assert(newRefCount >= 1);
+        }
+
+        public void DecrementReferenceCount()
+        {
+            int newRefCount = Interlocked.Decrement(ref _referenceCount);
+
+            Debug.Assert(newRefCount >= 0);
+
+            if (newRefCount == 0)
+            {
+                Destroy();
+            }
+        }
+
+        protected abstract void Destroy();
+    }
+}