New Feature: support packaging Xposed modules into the source apk file

Add New Feature:

Using -xm command to add Xposed module file path, the these modules will be packed into the source apk.

If one module is packed into the apk, this apk will not load the module installed in the device any more, only load the one packed into it.

增加新功能：

支持将Xposed modules直接打包到apk文件中，这样apk启动的时候直接加载这些打包到其中的modules。
为避免重复加载，打包其中的apk假如被安装在设备（手机）上，不会被再次加载。