[iOS] Rework push notification methods usage

Moved AppDelegate push notifications methods implementation to 'GODOT_ENABLE_PUSH_NOTIFICATIONS'
which can be used in plugins to implement APNS plugins.

(cherry picked from commit 366ce084f494be06e7c6d166c6e4688c2db7dd7a)

platform/iphone/godot_app_delegate.h

@@ -31,6 +31,7 @@
 #import <UIKit/UIKit.h>
 
 typedef NSObject<UIApplicationDelegate> ApplicationDelegateService;
+typedef void (^APNSNotification)(UIBackgroundFetchResult);
 
 @interface GodotApplicalitionDelegate : NSObject <UIApplicationDelegate>
 
@@ -38,4 +39,27 @@ typedef NSObject<UIApplicationDelegate> ApplicationDelegateService;
 
 + (void)addService:(ApplicationDelegateService *)service;
 
+- (void)godot:(UIApplication *)application receivedNotificationToken:(NSData *)deviceToken;
+- (void)godot:(UIApplication *)application receivedNotificationError:(NSError *)error;
+- (void)godot:(UIApplication *)application receivedNotification:(NSDictionary *)userInfo completion:(APNSNotification)completionHandler;
+
 @end
+
+#define GODOT_ENABLE_PUSH_NOTIFICATIONS                                                                                                \
+	@interface GodotApplicalitionDelegate (PushNotifications)                                                                          \
+	@end                                                                                                                               \
+	@implementation GodotApplicalitionDelegate (PushNotifications)                                                                     \
+	-(void)application : (UIApplication *)application                                                                                  \
+								 didRegisterForRemoteNotificationsWithDeviceToken : (NSData *)deviceToken {                            \
+		[self godot:application receivedNotificationToken:deviceToken];                                                                \
+	}                                                                                                                                  \
+	-(void)application : (UIApplication *)application                                                                                  \
+								 didFailToRegisterForRemoteNotificationsWithError : (NSError *)error {                                 \
+		[self godot:application receivedNotificationError:error];                                                                      \
+	}                                                                                                                                  \
+	-(void)application : (UIApplication *)application                                                                                  \
+								 didReceiveRemoteNotification : (NSDictionary *)userInfo                                               \
+																		fetchCompletionHandler : (APNSNotification)completionHandler { \
+		[self godot:application receivedNotification:userInfo completion:completionHandler];                                           \
+	}                                                                                                                                  \
+	@end

platform/iphone/godot_app_delegate.m

@@ -302,7 +302,7 @@ static NSMutableArray<ApplicationDelegateService *> *services = nil;
 
 // MARK: Remote Notification
 
-- (void)application:(UIApplication *)application didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
+- (void)godot:(UIApplication *)application receivedNotificationToken:(NSData *)deviceToken {
 	for (ApplicationDelegateService *service in services) {
 		if (![service respondsToSelector:_cmd]) {
 			continue;
@@ -312,7 +312,7 @@ static NSMutableArray<ApplicationDelegateService *> *services = nil;
 	}
 }
 
-- (void)application:(UIApplication *)application didFailToRegisterForRemoteNotificationsWithError:(NSError *)error {
+- (void)godot:(UIApplication *)application receivedNotificationError:(NSError *)error {
 	for (ApplicationDelegateService *service in services) {
 		if (![service respondsToSelector:_cmd]) {
 			continue;
@@ -322,7 +322,7 @@ static NSMutableArray<ApplicationDelegateService *> *services = nil;
 	}
 }
 
-- (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo fetchCompletionHandler:(void (^)(UIBackgroundFetchResult result))completionHandler {
+- (void)godot:(UIApplication *)application receivedNotification:(NSDictionary *)userInfo completion:(APNSNotification)completionHandler {
 	for (ApplicationDelegateService *service in services) {
 		if (![service respondsToSelector:_cmd]) {
 			continue;