add namespaces and cmakelists for sub-dirs

src/motions/sixsitejump.h

@@ -0,0 +1,32 @@
+
+#ifndef SIXSITEJUMP_H
+#define SIXSITEJUMP_H
+
+#include "base.h"
+
+#include <random>
+#include <cmath>
+#include <array>
+
+namespace motions {
+    class SixSiteOctahedron final : public BaseMotion {
+    public:
+        SixSiteOctahedron(double, double, std::mt19937_64&);
+        explicit SixSiteOctahedron(std::mt19937_64&);
+
+        void initialize() override;
+        double jump() override;
+
+        [[nodiscard]] std::string toString() const override;
+
+    private:
+        const double m_beta{std::acos(-1/3.)};
+
+        std::array<double, 6> m_corners{};
+        int m_corner_idx{0};
+
+        std::uniform_int_distribution<> m_chooser{1, 5};
+
+    };
+}
+#endif //SIXSITEJUMP_H