Add support for multiple via-way restrictions (#5907)

Currently OSRM only supports turn restrictions with a single via-node or one
via-way. OSM allows for multiple via-ways to represent longer and more
complex restrictions.

This PR extends the use of duplicate nodes for representng via-way turn
restrictions to also support multi via-way restrictions. Effectively, this
increases the edge-based graph size by the number of edges in multi via-way
restrictions. However, given the low number of these restrictions it
has little effect on total graph size.

In addition, we add a new step in the extraction phase that constructs
a restriction graph to support more complex relationships between restrictions,
such as nested restrictions and overlapping restrictions.

src/extractor/scripting_environment_lua.cpp

@@ -870,7 +870,7 @@ void Sol2ScriptingEnvironment::ProcessElements(
     const ExtractionRelationContainer &relations,
     std::vector<std::pair<const osmium::Node &, ExtractionNode>> &resulting_nodes,
     std::vector<std::pair<const osmium::Way &, ExtractionWay>> &resulting_ways,
-    std::vector<InputConditionalTurnRestriction> &resulting_restrictions,
+    std::vector<InputTurnRestriction> &resulting_restrictions,
     std::vector<InputManeuverOverride> &resulting_maneuver_overrides)
 {
     ExtractionNode result_node;