Add api_version gloabal variable to profiles

Currently only `0` is supported (the default).

include/extractor/scripting_environment_lua.hpp

@@ -30,6 +30,8 @@ struct LuaScriptingContext final
     bool has_node_function;
     bool has_way_function;
     bool has_segment_function;
+
+    int api_version;
 };
 
 /**
@@ -42,6 +44,9 @@ struct LuaScriptingContext final
 class Sol2ScriptingEnvironment final : public ScriptingEnvironment
 {
   public:
+    static const constexpr int SUPPORTED_MIN_API_VERSION = 0;
+    static const constexpr int SUPPORTED_MAX_API_VERSION = 0;
+
     explicit Sol2ScriptingEnvironment(const std::string &file_name);
     ~Sol2ScriptingEnvironment() override = default;