Support loading NSO/NRO without a MOD0 header, stub some functions, support more ids on SvcGetInfo

Ryujinx/Loaders/Executables/IExecutable.cs

@@ -0,0 +1,17 @@
+using System.Collections.ObjectModel;
+
+namespace Ryujinx.Loaders.Executables
+{
+    interface IExecutable
+    {
+        ReadOnlyCollection<byte> Text { get; }
+        ReadOnlyCollection<byte> RO   { get; }
+        ReadOnlyCollection<byte> Data { get; }
+
+        int Mod0Offset { get; }
+        int TextOffset { get; }
+        int ROOffset   { get; }
+        int DataOffset { get; }
+        int BssSize    { get; }
+    }
+}