Add InAppMessage event to iOS

Author: amadeu01

ios/RCTOneSignal/RCTOneSignalEventEmitter.h

@@ -16,13 +16,13 @@ typedef NS_ENUM(NSInteger, OSNotificationEventTypes) {
     NotificationReceived,
     NotificationOpened,
     IdsAvailable,
-    EmailSubscriptionChanged
+    EmailSubscriptionChanged,
+    InAppMessageClicked
 };
 
-#define OSNotificationEventTypesArray @[@"OneSignal-remoteNotificationReceived",@"OneSignal-remoteNotificationOpened",@"OneSignal-idsAvailable",@"OneSignal-emailSubscription"]
+#define OSNotificationEventTypesArray @[@"OneSignal-remoteNotificationReceived",@"OneSignal-remoteNotificationOpened",@"OneSignal-idsAvailable",@"OneSignal-emailSubscription",@"OneSignal-inAppMessageClicked"]
 #define OSEventString(enum) [OSNotificationEventTypesArray objectAtIndex:enum]
 
-
 @interface RCTOneSignalEventEmitter : RCTEventEmitter <RCTBridgeModule>
 
 + (void)sendEventWithName:(NSString *)name withBody:(NSDictionary *)body;