Create option pricing engine structure, test architecture.

src/Statistics.hpp

@@ -0,0 +1,30 @@
+//
+// Created by David Doebel  on 06.03.2026.
+//
+
+#ifndef QUANTENGINE_STATISTICS_HPP
+#define QUANTENGINE_STATISTICS_HPP
+#include <vector>
+
+
+class Statistics {
+public:
+    Statistics() : moments_({0., 0., 0.}), max_(0.), min_(0.) {}
+    void dump(double value);
+    void clear();
+    double mean();
+    double variance();
+    double standardDeviation();
+    double skewness();
+    double max();
+    double min();
+    double sum();
+    double count();
+private:
+    std::vector<double> moments_;
+    std::size_t n;
+    double max_, min_;
+};
+
+
+#endif //QUANTENGINE_STATISTICS_HPP