chore: adds Swift Package Manager compatibility (#208)

Author: jokerttu

.gitignore

@@ -45,6 +45,7 @@ Pods/
 **/Flutter/flutter_assets/
 ServiceDefinitions.json
 xcuserdata/
+.swiftpm/
 .last_build_id
 
 # Android

example/.gitignore

@@ -5,9 +5,11 @@
 *.swp
 .DS_Store
 .atom/
+.build/
 .buildlog/
 .history
 .svn/
+.swiftpm/
 migrate_working_dir/
 
 # IntelliJ related

ios/Assets/.gitkeep

@@ -13,7 +13,7 @@ A Google Maps Navigation Flutter plugin.
   s.license          = { :file => '../LICENSE' }
   s.author           = { 'Google Maps' => '[email protected]' }
   s.source           = { :path => '.' }
-  s.source_files = 'Classes/**/*'
+  s.source_files = 'google_navigation_flutter/Sources/google_navigation_flutter/**/*.swift'
   s.dependency 'Flutter'
   s.dependency 'GoogleNavigation', '9.1.2'
   s.platform = :ios, '15.0'
@@ -22,5 +22,5 @@ A Google Maps Navigation Flutter plugin.
   # Flutter.framework does not contain a i386 slice.
   s.pod_target_xcconfig = { 'DEFINES_MODULE' => 'YES', 'EXCLUDED_ARCHS[sdk=iphonesimulator*]' => 'i386' }
   s.swift_version = '5.0'
-  s.resource_bundles = {'google_navigation_flutter_privacy_info' => ['Resources/PrivacyInfo.xcprivacy']}
+  s.resource_bundles = {'google_navigation_flutter_privacy_info' => ['google_navigation_flutter/Sources/google_navigation_flutter/PrivacyInfo.xcprivacy']}
 end

ios/google_navigation_flutter.podspec

@@ -0,0 +1,56 @@
+// swift-tools-version: 5.9
+// The swift-tools-version declares the minimum version of Swift required to build this package.
+
+// Copyright 2024 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+import PackageDescription
+
+let package = Package(
+  name: "google_navigation_flutter",
+  platforms: [
+    .iOS("15.0"),
+  ],
+  products: [
+    .library(name: "google-navigation-flutter", targets: ["google_navigation_flutter"]),
+  ],
+  dependencies: [
+    .package(
+      url: "https://github.com/googlemaps/ios-navigation-sdk",
+      exact: "9.1.2"
+    ),
+    .package(
+      url: "https://github.com/googlemaps/ios-maps-sdk",
+      exact: "9.1.1"
+    ),
+  ],
+  targets: [
+    .target(
+      name: "google_navigation_flutter",
+      dependencies: [
+        .product(
+          name: "GoogleNavigation",
+          package: "ios-navigation-sdk"
+        ),
+        .product(
+          name: "GoogleMaps",
+          package: "ios-maps-sdk"
+        ),
+      ],
+      resources: [
+        .process("PrivacyInfo.xcprivacy"),
+      ]
+    ),
+  ]
+)