audio: Allow Module subclasses to customize stream creation

Since specializations of the 'Module' class likely need
to provide their own specializations for streams, provide
virtual methods for them.

Bug: 282568751
Test: atest VtsHalAudioCoreTargetTest
Change-Id: Iddb1bff9f11bc867aba61897ea2f8b9bc3c27544
9 files changed