Improve IDE navigation to SdkBase methods

Previously, it was not possible to navigate directly from the interface
methods in SdkAware to the implementations in SdkBase as the former
embeds android.Module but the latter did not implement those methods
and so did not implement SdkAware. Finding the implementation of those
methods required explicitly searching for them.

This change extracts sdkAwareWithoutModule interface to allow use of
the IDE capability to navigate directly to implementations of an
interface method.

Test: m nothing
Change-Id: I0cd25180ea0081a54681b58e3202ff9491563131