Android utils and workloads

Created by: derkling

A set of common functionalities are usually required to run workloads on an Android target. Some workloads are so simple which can be automated with few ADB commands. However, the precise sequencing of these commands can affect the experiment. For example, remembering to tune specific Screen settings or start/stop energy sampling once specific events happens are simple functionalities which however are easy to forget if coded from scratch each time.

This patchset adds an initial set of Android related modules which have to goal to factorize some of the most common setting for few interesting workloads.