Add Python library (#20)

tools/cli.py

@@ -0,0 +1,13 @@
+#!/usr/bin/env python3
+
+# Remote CLI for Flix
+
+from pyflix import Flix
+
+flix = Flix()
+
+flix.on('print', lambda text: print(text, end=''))
+
+while True:
+    command = input()
+    flix.cli(command, wait_response=False)