add user and system act types

UserActType.py

@@ -0,0 +1,22 @@
+from enum import Enum, unique
+
+
+@unique
+class UserActType(Enum):
+    ack = 0,
+    affirm = 1,
+    bye = 2,
+    hello = 3,
+    help = 4,
+    negate = 5,
+    null = 6,
+    repeat = 7,
+    requalts = 8,
+    reqmore = 9,
+    restart = 10,
+    silence = 11,
+    thankyou = 12,
+    confirm = 13,
+    deny = 14,
+    inform = 15,
+    request = 16