Create a new template project for Gradle build

[atanasovg]

Gradle build will enable us to consume *.aar files and it will also make it trivial to add dependencies to the support and appcompat libraries.

The task is generally split to the following sub-tasks:

• Setup a simple build.gradle script.
• Copy all the compile dependencies to a temporary folder.
• Run the metadata generator on the compileSdkVersion<android.jar> as well as on all the dependencies.
• Copy the generated metadata at the proper place.

Once we are ready with the above tasks we need to sync with the CLI team and migrate to gradle commands as well.