Set backends to Auto

Author: sa-exe

src/Games/CowsHead/Game.json

@@ -1,8 +1,8 @@
 {
   "activeProfile": "Noah",
   "graphics.vsync": true,
-  "graphics.backend": "D3D11",
-  "audio.backend": "XAudio2",
+  "graphics.backend": "Auto",
+  "audio.backend": "Auto",
   "window.title": "COWS;HEAD NOAH",
   "window.width": 1280,
   "window.height": 720,

src/NitroSharp.Launcher/ConfigurationReader.cs

@@ -135,7 +135,7 @@ private static void Set(Configuration configuration, KeyValuePair<string, JsonVa
             {
                 "XAUDIO" or "XAUDIO2" => AudioBackend.XAudio2,
                 "OPENAL" or "OPENALSOFT" or "OPENAL SOFT" => AudioBackend.OpenAL,
-                "NULL" or "Null" or "Auto" or "AUTO" => AudioBackend.Null,
+                "NULL" or "Null" or "null" or "AUTO" or "Auto" or "auto" => AudioBackend.Null,
                 _ => null,
             };
         }