feat(integration): 添加 AppLovin SDK 集成管理功能

- 实现 AppLovinIntegrationManagerUtils 版本比较工具类
- 添加 AppLovinPackageManager 处理 UPM 和 Assets 包管理
- 实现 AppLovinPluginMigrationHelper 插件迁移辅助功能
- 添加 AppLovinUpmManifest 管理 UPM 清单文件操作
- 支持 mediation adapter 的版本检测和安装管理
- 实现重复适配器检测和删除功能

sdk-intergration/Assets/MaxSdk/Scripts/IntegrationManager/Editor/AppLovinPreProcessAndroid.cs

@@ -8,6 +8,7 @@
 
 #if UNITY_ANDROID
 
+using System.Xml.Linq;
 using UnityEditor.Build;
 using UnityEditor.Build.Reporting;
 
@@ -18,9 +19,11 @@ namespace AppLovinMax.Scripts.IntegrationManager.Editor
     /// </summary>
     public class AppLovinPreProcessAndroid : AppLovinProcessGradleBuildFile, IPreprocessBuildWithReport
     {
-        private const string UmpLegacyDependencyLine = "<androidPackage spec=\"com.google.android.ump:user-messaging-platform:2.1.0\" />";
-        private const string UmpDependencyLine = "<androidPackage spec=\"com.google.android.ump:user-messaging-platform:2.+\" />";
-        private const string AndroidPackagesContainerElementString = "androidPackages";
+        private const string ElementNameAndroidPackages = "androidPackages";
+        private const string ElementNameAndroidPackage = "androidPackage";
+        private const string AttributeNameSpec = "spec";
+        private const string UmpDependencyPackage = "com.google.android.ump:user-messaging-platform:";
+        private const string UmpDependencyVersion = "2.1.0";
 
         public void OnPreprocessBuild(BuildReport report)
         {
@@ -33,33 +36,74 @@ namespace AppLovinMax.Scripts.IntegrationManager.Editor
             // We can only process gradle template file here. If it is not available, we will try again in post build on Unity IDEs newer than 2018_2 (see AppLovinPostProcessGradleProject).
             if (!AppLovinIntegrationManager.GradleTemplateEnabled) return;
 
-#if UNITY_2019_3_OR_NEWER
             // The publisher could be migrating from older Unity versions to 2019_3 or newer.
             // If so, we should delete the plugin from the template. The plugin will be added to the project's application module in the post processing script (AppLovinPostProcessGradleProject).
             RemoveAppLovinQualityServiceOrSafeDkPlugin(AppLovinIntegrationManager.GradleTemplatePath);
-#else
-            AddAppLovinQualityServicePlugin(AppLovinIntegrationManager.GradleTemplatePath);
-#endif
         }
 
         private static void AddGoogleCmpDependencyIfNeeded()
         {
-            // Remove the legacy fixed UMP version if it exists, we'll add the dependency with a dynamic version below.
-            TryRemoveStringFromDependencyFile(UmpLegacyDependencyLine, AndroidPackagesContainerElementString);
-
             if (AppLovinInternalSettings.Instance.ConsentFlowEnabled)
             {
-                TryAddStringToDependencyFile(UmpDependencyLine, AndroidPackagesContainerElementString);
+                var umpPackage = new XElement(ElementNameAndroidPackage,
+                    new XAttribute(AttributeNameSpec, UmpDependencyPackage + UmpDependencyVersion)); 
+                var success = AddOrUpdateAndroidDependency(UmpDependencyPackage, umpPackage );
+                if (!success)
+                {
+                    MaxSdkLogger.UserWarning("Google CMP will not function. Unable to add user-messaging-platform dependency.");
+                }
             }
             else
             {
-                TryRemoveStringFromDependencyFile(UmpDependencyLine, AndroidPackagesContainerElementString);
+                RemoveAndroidDependency(UmpDependencyPackage);
             }
         }
 
+        /// <summary>
+        /// Adds or updates an Android dependency in the AppLovin Dependencies.xml file.
+        /// </summary>
+        /// <param name="package">The package that we are trying to update</param>
+        /// <param name="newDependency">The new dependency to add if it doesn't exist</param>
+        /// <returns>Returns true if the file was successfully edited</returns>
+        private static bool AddOrUpdateAndroidDependency(string package, XElement newDependency)
+        {
+            var dependenciesFilePath = AppLovinDependenciesFilePath;
+            var dependenciesDocument = GetAppLovinDependenciesFile(dependenciesFilePath, AppLovinIntegrationManager.IsPluginInPackageManager);
+            if (dependenciesDocument == null) return false;
+
+            AddOrUpdateDependency(dependenciesDocument,
+                ElementNameAndroidPackages,
+                ElementNameAndroidPackage,
+                AttributeNameSpec,
+                package,
+                newDependency);
+            return SaveDependenciesFile(dependenciesDocument, dependenciesFilePath);
+        }
+
+        /// <summary>
+        /// Removed an android dependency from the AppLovin Dependencies.xml file.
+        /// </summary>
+        /// <param name="package">The package to remove</param>
+        private static void RemoveAndroidDependency(string package)
+        {
+            var dependenciesFilePath = AppLovinDependenciesFilePath;
+            var dependenciesDocument = GetAppLovinDependenciesFile(dependenciesFilePath);
+            if (dependenciesDocument == null) return;
+
+            var removed = RemoveDependency(dependenciesDocument,
+                ElementNameAndroidPackages,
+                ElementNameAndroidPackage,
+                AttributeNameSpec,
+                package);
+            
+            if (!removed) return;
+
+            SaveDependenciesFile(dependenciesDocument, dependenciesFilePath);
+        }
+
         public int callbackOrder
         {
-            get { return int.MaxValue; }
+            get { return CallbackOrder; }
         }
     }
 }