Phase 2: Add Swift Package Manager support

- Added Package.swift with iOS 14+ target
- Configured SPM target with necessary frameworks
- Included PrivacyInfo.xcprivacy resource
- Supported Swift tools version 5.9

Author: ened

permission_handler_apple/Package.swift

@@ -0,0 +1,48 @@
+// swift-tools-version: 5.9
+import PackageDescription
+
+let package = Package(
+    name: "permission_handler_apple",
+    platforms: [
+        .iOS(.v14)
+    ],
+    products: [
+        .library(
+            name: "permission_handler_apple",
+            targets: ["permission_handler_apple"]),
+    ],
+    dependencies: [],
+    targets: [
+        .target(
+            name: "permission_handler_apple",
+            dependencies: [],
+            path: "Sources/permission_handler_apple",
+            resources: [
+                .copy("Resources/PrivacyInfo.xcprivacy")
+            ],
+            publicHeadersPath: ".",
+            cSettings: [
+                .headerSearchPath("."),
+                .headerSearchPath("util"),
+                .headerSearchPath("strategies"),
+                .define("PERMISSION_HANDLER_APPLE", to: "1")
+            ],
+            linkerSettings: [
+                .linkedFramework("Flutter", .when(platforms: [.iOS])),
+                .linkedFramework("UIKit", .when(platforms: [.iOS])),
+                .linkedFramework("Foundation"),
+                .linkedFramework("CoreBluetooth", .when(platforms: [.iOS])),
+                .linkedFramework("CoreLocation", .when(platforms: [.iOS])),
+                .linkedFramework("EventKit", .when(platforms: [.iOS])),
+                .linkedFramework("Photos", .when(platforms: [.iOS])),
+                .linkedFramework("Contacts", .when(platforms: [.iOS])),
+                .linkedFramework("AVFoundation", .when(platforms: [.iOS])),
+                .linkedFramework("MediaPlayer", .when(platforms: [.iOS])),
+                .linkedFramework("Speech", .when(platforms: [.iOS])),
+                .linkedFramework("CoreMotion", .when(platforms: [.iOS])),
+                .linkedFramework("UserNotifications", .when(platforms: [.iOS])),
+                .linkedFramework("AppTrackingTransparency", .when(platforms: [.iOS]))
+            ]
+        ),
+    ]
+)