Refactor the ISoundDose.aidl interface

This refactoring is fixing the hal_implementation_test workaround from
aosp/2363076. Adjusted the package name to match the aidl_interface and
declared the ISoundDose interface types only.

Test: VtsHalSoundDoseFactoryTargetTest, VtsHalAudioCoreTargetTest,
hal_implementation_test
Bug: 263388737

Change-Id: Ibce4cd95aaf600de2096179f137243939114ba6a
Merged-In: Ibce4cd95aaf600de2096179f137243939114ba6a