add azaion loader

Azaion.Loader/remote_command.pxd

@@ -0,0 +1,22 @@
+cdef enum CommandType:
+    LOGIN = 10
+    LOAD = 20
+    DATA_BYTES = 25
+    INFERENCE = 30
+    INFERENCE_DATA = 35
+    STOP_INFERENCE = 40
+    AI_AVAILABILITY_CHECK = 80
+    AI_AVAILABILITY_RESULT = 85
+    ERROR = 90
+    EXIT = 100
+
+cdef class RemoteCommand:
+    cdef public bytes client_id
+    cdef CommandType command_type
+    cdef str message
+    cdef bytes data
+
+    @staticmethod
+    cdef from_msgpack(bytes data)
+
+    cdef bytes serialize(self)