Add setting to swap A<->B and X<->Y buttons (#513)

* Added toggle for swapping A<->B and X<->Y buttons to enable proper button mapping for combined Joy-Cons in iOS16, where iOS level remapping is not supported and pushing Switch B (bottom face button) sends Xbox B (right face button) instead of Xbox A (bottom face button), etc.  Allows user to select between current behavior (button letter matches output) and muscle-memory behavior (face button pressed matches location of face button output)

Limelight/Database/TemporarySettings.h

@@ -22,6 +22,7 @@
 @property (nonatomic) BOOL useHevc;
 @property (nonatomic) BOOL useFramePacing;
 @property (nonatomic) BOOL multiController;
+@property (nonatomic) BOOL swapABXYButtons;
 @property (nonatomic) BOOL playAudioOnPC;
 @property (nonatomic) BOOL optimizeGames;
 @property (nonatomic) BOOL enableHdr;