* feat(voice): add QoS stubs (GetStatus, Terminate, SetMode)
Titles call these functions during voice/multiplayer setup to check
network availability and configure modes. Unresolved imports caused
WARN floods in the loader logs. Reporting initialized + disconnected
lets callers take their normal offline path.
* fix(voice): return success (0) from sceVoiceQoSGetStatus instead of disconnected state