Fix header imports for SPM structure

Author: ened

permission_handler_apple/ios/permission_handler_apple/Package.swift

@@ -4,7 +4,7 @@ import PackageDescription
 let package = Package(
     name: "permission-handler-apple",
     platforms: [
-        .iOS(.v14)
+        .iOS(.v12)
     ],
     products: [
         .library(

permission_handler_apple/ios/permission_handler_apple/Sources/permission_handler_apple/include/permission_handler_apple/BackgroundRefreshStrategy.h

@@ -6,6 +6,7 @@
 //
 
 #import <Foundation/Foundation.h>
+#import <UIKit/UIKit.h>
 #import "PermissionStrategy.h"
 
 NS_ASSUME_NONNULL_BEGIN

permission_handler_apple/ios/permission_handler_apple/Sources/permission_handler_apple/strategies/BackgroundRefreshStrategy.m

@@ -5,7 +5,7 @@
 //  Created by Sebastian Roth on 28/09/2023.
 //
 
-#import "BackgroundRefreshStrategy.h"
+#import "permission_handler_apple/BackgroundRefreshStrategy.h"
 
 @implementation BackgroundRefreshStrategy