Move solution and projects to src

src/Ryujinx.Common/Utilities/UInt128Utils.cs

@@ -0,0 +1,18 @@
+using System;
+using System.Globalization;
+
+namespace Ryujinx.Common.Utilities
+{
+    public static class UInt128Utils
+    {
+        public static UInt128 FromHex(string hex)
+        {
+            return new UInt128(ulong.Parse(hex.AsSpan(0, 16), NumberStyles.HexNumber), ulong.Parse(hex.AsSpan(16), NumberStyles.HexNumber));
+        }
+
+        public static UInt128 CreateRandom()
+        {
+            return new UInt128((ulong)Random.Shared.NextInt64(), (ulong)Random.Shared.NextInt64());
+        }
+    }
+}