Re-add rest_client script

ft_client/freqtrade_client/ft_rest_client.py

@@ -415,5 +415,3 @@ class FtRestClient:
         :return: json object
         """
         return self._get("health")
-
-

scripts/rest_client.py

@@ -0,0 +1,14 @@
+#!/usr/bin/env python3
+"""
+Simple command line client into RPC commands
+Can be used as an alternate to Telegram
+
+Should not import anything from freqtrade,
+so it can be used as a standalone script.
+"""
+
+from freqtrade_client.ft_client import main
+
+
+if __name__ == '__main__':
+    main()