Properly set the supported language, user language, and region based on the ROM's region (#38)

arm7/source/loader/ConsoleRegion.h

@@ -0,0 +1,12 @@
+#pragma once
+
+/// @brief Enum for DSi console region.
+enum class ConsoleRegion
+{
+    Japan,
+    America,
+    Europe,
+    Australia,
+    China,
+    Korea
+};