Move solution and projects to src

src/Ryujinx.Horizon/Sdk/Sf/CommandArgAttributes.cs

@@ -0,0 +1,38 @@
+using Ryujinx.Horizon.Sdk.Sf.Hipc;
+using System;
+
+namespace Ryujinx.Horizon.Sdk.Sf
+{
+    [AttributeUsage(AttributeTargets.Parameter)]
+    class BufferAttribute : Attribute
+    {
+        public HipcBufferFlags Flags     { get; }
+        public ushort          FixedSize { get; }
+
+        public BufferAttribute(HipcBufferFlags flags)
+        {
+            Flags = flags;
+        }
+
+        public BufferAttribute(HipcBufferFlags flags, ushort fixedSize)
+        {
+            Flags     = flags | HipcBufferFlags.FixedSize;
+            FixedSize = fixedSize;
+        }
+    }
+
+    [AttributeUsage(AttributeTargets.Parameter)]
+    class ClientProcessIdAttribute : Attribute
+    {
+    }
+
+    [AttributeUsage(AttributeTargets.Parameter)]
+    class CopyHandleAttribute : Attribute
+    {
+    }
+
+    [AttributeUsage(AttributeTargets.Parameter)]
+    class MoveHandleAttribute : Attribute
+    {
+    }
+}