Adds .properties file to osrm-extract ouput

This file contains global properties set by the lua
profile, such as enabling uturns at vias and penalties.
This file will be consumed by the server.

profiles/bicycle.lua

@@ -91,9 +91,10 @@ surface_speeds = {
 }
 
 -- these need to be global because they are accesed externaly
-traffic_signal_penalty          = 2
-use_turn_restrictions           = false
-u_turn_penalty                  = 20
+properties.traffic_signal_penalty = 2
+properties.use_turn_restrictions  = false
+properties.u_turn_penalty         = 20
+properties.allow_u_turn_at_via    = true
 
 local obey_oneway               = true
 local ignore_areas              = true