Add class Paths and enhance input

src/Platform/Paths.h

@@ -0,0 +1,10 @@
+#ifndef PATHS_H
+#define PATHS_H
+namespace platform {
+    class Paths {
+    public:
+        static std::string datasets() { return "datasets/"; }
+        static std::string results() { return "results/"; }
+    };
+}
+#endif