Extract capture session out of RecognitionEvent

This field is not used by the HAL and is specific to the framework.
Extracting it to a separate argument, so the struct can be reused by
the HAL.

Test: Manual testing of OKG/Now Playing
Test: atest SoundTriggerMiddlewareImplTest
Change-Id: I468d124ad6516c49906d5244618204ad91e57368
13 files changed