android plugins built multiple times

my material components all depend on @nativescript-community/ui-material-core.
If you build an app using multiple of them you ll see something like that
We should only need to build it once.

uilt aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-textfield
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle
Built aar for @nativescript-community/ui-material-core
         + applying user-defined configuration from /Volumes/dev/nativescript/nativescript-material-components/demo-vue/app/App_Resources/Android/before-plugins.gradle

That app shows that behavior: https://github.com/nativescript-community/ui-material-components/tree/master/demo-vue

从 issue 中链接的 demo-vue 应用开始，使用多个 Material 组件重现其 Android 构建。跟踪 @nativescript-community/ui-material-core 和 before-plugins.gradle 的处理位置；当共享 core AAR 只构建一次，同时依赖它的插件仍能成功构建时，即表示完成。