Add solution for "Day 24: Crossed Wires", part 2

include/aoc/common/LogicGate.hpp

@@ -22,11 +22,13 @@ class LogicGate
 {
 public:
     enum class Kind { And, Or, Xor, Unknown };
+    static std::string getKindString(const Kind kind);
 
     std::string inputWire1;
     std::string inputWire2;
     std::string outputWire;
     Kind kind{ Kind::Unknown };
+    std::string getKindString() const;
 };
 
 std::istream& operator>>(std::istream& is, LogicGate& logicGate);