Move solution and projects to src

src/Ryujinx.Common/Memory/PartialUnmaps/PartialUnmapHelpers.cs

@@ -0,0 +1,20 @@
+using System.Runtime.CompilerServices;
+
+namespace Ryujinx.Common.Memory.PartialUnmaps
+{
+    static class PartialUnmapHelpers
+    {
+        /// <summary>
+        /// Calculates a byte offset of a given field within a struct.
+        /// </summary>
+        /// <typeparam name="T">Struct type</typeparam>
+        /// <typeparam name="T2">Field type</typeparam>
+        /// <param name="storage">Parent struct</param>
+        /// <param name="target">Field</param>
+        /// <returns>The byte offset of the given field in the given struct</returns>
+        public static int OffsetOf<T, T2>(ref T2 storage, ref T target)
+        {
+            return (int)Unsafe.ByteOffset(ref Unsafe.As<T2, T>(ref storage), ref target);
+        }
+    }
+}