Add STModule selection TestApis

Enable STInstrumentation for STManager clients.

- Add method which lists all device modules
- Add factory method which consumes a module properties to attach to
- Add factory method which connects to default test module

Fixes: 269165331
Test: atest SoundTriggerManagerTest
Change-Id: I731d240bc685d0782c9d09dd05129068f301eeb0