Add class DnaManager

inc/App.hpp

@@ -1,6 +1,6 @@
 #include <array>
 #include "canvas/Canvas.hpp"
-
+#include "values/DnaManager.hpp"
 class App
 {
 
@@ -21,5 +21,6 @@ private:
   Rectangle likeBox;
   Rectangle disLikeBox;
 
-  Dna dna = {0};
+  Dna *dnaShow = nullptr;
+  DnaManager manager;
 };

inc/values/DnaManager.hpp

@@ -0,0 +1,11 @@
+#include "values/Dna.hpp"
+
+class DnaManager
+{
+public:
+  DnaManager() = default;
+  Dna *next(bool prevLiked);
+
+private:
+  Dna dna;
+};