SMO stubs and implementations (#129)

* WIP SMO stubs and implementations

* fixes?

* Add StorageHelper

* Whoops

* Compliant with review.

* Remove unnecessary usings

Ryujinx.Core/OsHle/Services/Am/StorageHelper.cs

@@ -0,0 +1,27 @@
+using System.IO;
+
+namespace Ryujinx.Core.OsHle.Services.Am
+{
+    class StorageHelper
+    {
+        private const uint LaunchParamsMagic = 0xc79497ca;
+
+        public static byte[] MakeLaunchParams()
+        {
+            //Size needs to be at least 0x88 bytes otherwise application errors.
+            using (MemoryStream MS = new MemoryStream())
+            {
+                BinaryWriter Writer = new BinaryWriter(MS);
+
+                MS.SetLength(0x88);
+
+                Writer.Write(LaunchParamsMagic);
+                Writer.Write(1);  //IsAccountSelected? Only lower 8 bits actually used.
+                Writer.Write(1L); //User Id Low (note: User Id needs to be != 0)
+                Writer.Write(0L); //User Id High
+
+                return MS.ToArray();
+            }
+        }
+    }
+}