Initial work on iterators, rework of variable handling by including actual string

src/Evaluator/EvalValues/NumericEvalValue.hpp

@@ -4,6 +4,8 @@
 
 #include <sstream>
 #include "EvalValue.hpp"
+#include "../../Utilities/StringUtils.hpp"
+
 namespace Porygon::Evaluation {
     class NumericEvalValue : public EvalValue {
 
@@ -58,6 +60,10 @@ namespace Porygon::Evaluation {
             return _value;
         }
 
+        const std::u16string EvaluateString() const final{
+            return Utilities::StringUtils::IntToString(_value);
+        }
+
         const shared_ptr<EvalValue> Clone() const final {
             return make_shared<IntegerEvalValue>(_value);
         }