added py files

const.py

@@ -0,0 +1,13 @@
+"""Constants for the Uster Waste integration."""
+DOMAIN = "uster_waste"
+
+# Attributes for sensor
+ATTR_NEXT_COLLECTION = "next_collection"
+ATTR_DATE = "date"
+ATTR_TYPE = "type"
+ATTR_DAYS_UNTIL = "days_until"
+ATTR_ENTRIES = "entries"
+ATTR_ERROR = "error"
+
+# UI Labels
+MANUAL_REFRESH = "manual_refresh"