New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/platform/duration.hpp

@@ -0,0 +1,37 @@
+#pragma once
+
+#include "platform/localization.hpp"
+
+#include <string>
+#include <set>
+#include <chrono>
+
+namespace platform
+{
+
+class Duration
+{
+public:
+  enum class Units
+  {
+    Days = 0,
+    Hours = 1,
+    Minutes = 2,
+  };
+
+  explicit Duration(unsigned long seconds);
+
+  static std::string GetUnitsString(Units unit);
+
+  std::string GetLocalizedString(std::initializer_list<Units> units, Locale const & locale) const;
+  std::string GetPlatformLocalizedString() const;
+
+private:
+  const std::chrono::seconds m_seconds;
+
+  std::string GetString(std::initializer_list<Units> units, std::string_view unitSeparator, std::string_view groupingSeparator) const;
+};
+
+std::string DebugPrint(Duration::Units units);
+
+}  // namespace platform