Enhance output info in Statistics

src/Platform/Symbols.h

@@ -0,0 +1,18 @@
+#ifndef SYMBOLS_H
+#define SYMBOLS_H
+#include <string>
+using namespace std;
+namespace platform {
+    class Symbols {
+    public:
+        inline static const string check_mark{ "\u2714" };
+        inline static const string exclamation{ "\u2757" };
+        inline static const string black_star{ "\u2605" };
+        inline static const string cross{ "\u2717" };
+        inline static const string upward_arrow{ "\u27B6" };
+        inline static const string down_arrow{ "\u27B4" };
+        inline static const string equal_best{ check_mark };
+        inline static const string better_best{ black_star };
+    };
+}
+#endif // !SYMBOLS_H