Add encrypted configuration backup and planned restore

audio_policy.py

@@ -43,7 +43,7 @@ class AudioPolicy:
   while True:
    time.sleep(8)
    with self.lock:settings={k:dict(v) for k,v in self.settings.items()}
-   if self.endpoint.state!='running':continue
+   if self.endpoint.state!='running' or self.scheduler.gpu_mode=='restoring':continue
    for kind,worker in (('stt',self.stt),('tts',self.tts)):
     item=settings[kind]
     if item['mode']!='warm':continue