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/ExternalDependencyManager/Editor/README.md

@@ -72,6 +72,12 @@ EDM4U is available on
 openupm add com.google.external-dependency-manager
 ```
 
+### Install via git URL
+1. Open Package Manager
+2. Click on the + icon on the top left corner of the "Package Manager" screen
+3. Click on "Install package from git url..."
+4. Paste: https://github.com/googlesamples/unity-jar-resolver.git?path=upm
+
 ### Install via Google APIs for Unity
 
 EDM4U is available both in UPM and legacy `.unitypackage` formats on