Added configuration file system.

Uses QSettings on citra-qt, and inih on citra-cli.

src/citra/default_ini.h

@@ -0,0 +1,30 @@
+// Copyright 2014 Citra Emulator Project
+// Licensed under GPLv2
+// Refer to the license.txt file included.
+
+#pragma once
+
+namespace DefaultINI {
+
+const char* glfw_config_file = R"(
+[Controls]
+pad_start =
+pad_select =
+pad_home =
+pad_dup =
+pad_ddown =
+pad_dleft =
+pad_dright =
+pad_a =
+pad_b =
+pad_x =
+pad_y =
+pad_r =
+pad_l =
+pad_sup =
+pad_sdown =
+pad_sleft =
+pad_sright =
+)";
+
+}