Add native support for magnets

VisualPinball.Engine/Game/EventId.cs

@@ -32,9 +32,15 @@ public enum EventId
 		TargetEventsRaised = 1303,  // DISPID_TargetEvents_Raised
 
 		// Generic
-		HitEventsHit = 1400, // DISPID_HitEvents_Hit
-		HitEventsUnhit = 1401, // DISPID_HitEvents_Unhit
-		LimitEventsEos = 1402, // DISPID_LimitEvents_EOS
-		LimitEventsBos = 1403, // DISPID_LimitEvents_BOS
-	}
-}
+		HitEventsHit = 1400, // DISPID_HitEvents_Hit
+		HitEventsUnhit = 1401, // DISPID_HitEvents_Unhit
+		LimitEventsEos = 1402, // DISPID_LimitEvents_EOS
+		LimitEventsBos = 1403, // DISPID_LimitEvents_BOS
+
+		// Magnet
+		MagnetEventsBallEntered = 1500,
+		MagnetEventsBallExited = 1501,
+		MagnetEventsBallGrabbed = 1502,
+		MagnetEventsBallReleased = 1503,
+	}
+}