Transparently Tidy Traces in Map Matching, resolves #2840.

The Map Matching plugin currently has issues with:
- high frequency traces and (performance)
- blobs, think noise at traffic signals (correctness)

This changeset implements trace-tidying transparently for the user.

We hopefully will see both performance gains as well as better matches!

include/engine/api/match_parameters.hpp

@@ -56,7 +56,7 @@ struct MatchParameters : public RouteParameters
                           false,
                           RouteParameters::GeometriesType::Polyline,
                           RouteParameters::OverviewType::Simplified,
-                          {})
+                          {}), use_tidying(true)
     {
     }
 
@@ -67,7 +67,8 @@ struct MatchParameters : public RouteParameters
     }
 
     std::vector<unsigned> timestamps;
-    bool use_tidying = true;
+    bool use_tidying;
+
     bool IsValid() const
     {
         return RouteParameters::IsValid() &&