fixed inference bugs

add DONE during inference, correct handling on C# side

Azaion.AI/remote_command_handler.pyx

@@ -1,8 +1,10 @@
+import time
 import zmq
 from threading import Thread, Event
 from remote_command cimport RemoteCommand
 cimport constants
 
+
 cdef class RemoteCommandHandler:
     def __init__(self, object on_command):
         self._on_command = on_command
@@ -59,8 +61,9 @@ cdef class RemoteCommandHandler:
             socket.send_multipart([client_id, data])
             print(f'{len(data)} bytes was sent to client {client_id}')
 
-    cdef close(self):
+    cdef stop(self):
         self._shutdown_event.set()
+        time.sleep(0.5)
         self._router.close()
         self._dealer.close()
         self._context.term()