Add IsCursorEnabled to raylib.h

src/raylib.h

@@ -1025,6 +1025,7 @@ RLAPI void HideCursor(void);                                      // Hides curso
 RLAPI bool IsCursorHidden(void);                                  // Check if cursor is not visible
 RLAPI void EnableCursor(void);                                    // Enables cursor (unlock cursor)
 RLAPI void DisableCursor(void);                                   // Disables cursor (lock cursor)
+RLAPI bool IsCursorEnabled(void);                                 // Check if cursor is enabled (unlocked)
 RLAPI bool IsCursorOnScreen(void);                                // Check if cursor is on the screen
 
 // Drawing-related functions