Implemented D-Pad player input

This is mainly beneficial for 2D sections with PlayStation controllers where the D-Pad may be more preferable, but it also works in 3D too.

UnleashedRecomp/locale/config_locale.h

@@ -142,6 +142,11 @@ CONFIG_DEFINE_LOCALE(AllowBackgroundInput)
     { ELanguage::English, { "Allow Background Input", "Accept controller input whilst the game window is unfocused." } }
 };
 
+CONFIG_DEFINE_LOCALE(AllowDPadMovement)
+{
+    { ELanguage::English, { "Allow D-Pad Movement", "Allow the player to also be controlled using the directional pad." } }
+};
+
 CONFIG_DEFINE_LOCALE(MusicVolume)
 {
     { ELanguage::English, { "Music Volume", "Adjust the volume for the music." } }