better handling of tts

nostr_dvm/interfaces/dvmtaskinterface.py

@@ -106,6 +106,7 @@ class DVMTaskInterface:
     def run(self):
         nostr_dvm_thread = Thread(target=self.DVM, args=[self.dvm_config, self.admin_config])
         nostr_dvm_thread.start()
+        nostr_dvm_thread.join()
 
     async def schedule(self, dvm_config):
         """schedule something, e.g. define some time to update or to post, does nothing by default"""