add loader and versioning

Azaion.Inference/loader_client.pxd

@@ -1,7 +1,12 @@
 from remote_command cimport RemoteCommand
 
+cdef class LoadResult:
+    cdef public str err
+    cdef public bytes data
+
+
 cdef class LoaderClient:
-    cdef object _context
+    cdef object _loader_context
     cdef object _socket
 
     cdef RemoteCommand _send_receive_command(self, RemoteCommand command)
@@ -10,4 +15,4 @@ cdef class LoaderClient:
 
     cdef upload_big_small_resource(self, bytes content, str filename, str directory)
 
-    cdef close(self)
+    cdef stop(self)