add sound_trigger_model_parameter_t

first parameter supported is MODEL_PARAMETER_THRESHOLD_FACTOR

Bug: 141929369
Test: Tested manually with test app and confirmed with GTS test
gts-tradefed run gts-dev -m GtsAssistIntentTestCases
Change-Id: Ia226c3745a229e7d782416ff0d2ff79b629a69f3
1 file changed