Adds comment about required sync w/ other enum

Author: iosifache

zeratool_lib/zeratool_lib.py

@@ -34,6 +34,8 @@
 
 
 class ZeratoolInputStreams(Enum):
+    """Sync names with commons.input_streams.InputStreams."""
+
     STDIN = "STDIN"
     ARGUMENTS = "ARG"