add some generic datatypes

aman/types/ArrivalRoute.py

@@ -0,0 +1,11 @@
+#!/usr/bin/env python
+
+class ArrivalRoute:
+    def __init__(self, name : str, runway : str, waypoints : list):
+        self.name = name
+        self.runway = runway
+        self.iaf = waypoints[0]
+        self.route = waypoints
+
+    def __str__(self):
+        return 'Name: ' + self.name + ', IAF: ' + self.iaf.name + ', RWY: ' + self.runway