As of Android 6.0, apps can request permissions at runtime. If the
target device is running Android 6.0+ these permissions are now automatically
granted.
Added -p option to the list command. This alows filtering results by
supported platforms, e.g.
wa list workloads -p linux
Also adding missing supported_platforms attribute to various extensions.
If an extension does not have this attribute, the assumption is that it
is supported by all available platforms.
