Implements Exit Numbers + Names (junction:ref way tag for now)

include/engine/datafacade/contiguous_internalmem_datafacade.hpp

@@ -808,6 +808,11 @@ class ContiguousInternalMemoryDataFacadeBase : public BaseDataFacade
         return m_name_table.GetDestinationsForID(id);
     }
 
+    StringView GetExitsForID(const NameID id) const override final
+    {
+        return m_name_table.GetExitsForID(id);
+    }
+
     StringView GetDatasourceName(const DatasourceID id) const override final
     {
         return m_datasources->GetSourceName(id);

include/engine/datafacade/datafacade_base.hpp

@@ -158,6 +158,8 @@ class BaseDataFacade
 
     virtual StringView GetDestinationsForID(const NameID id) const = 0;
 
+    virtual StringView GetExitsForID(const NameID id) const = 0;
+
     virtual std::string GetTimestamp() const = 0;
 
     virtual bool GetContinueStraightDefault() const = 0;