Add Time helper class

cpp/Time.cpp

@@ -0,0 +1,14 @@
+#include "Gedeng/Time.h"
+
+#include <chrono>
+
+namespace Gedeng {
+
+unsigned long Time::get_time_ms() {
+    auto now = std::chrono::high_resolution_clock::now();
+    auto now_ms = std::chrono::time_point_cast<std::chrono::milliseconds>(now);
+
+    return now_ms.time_since_epoch().count();
+}
+
+}

include/Gedeng.h

@@ -4,5 +4,6 @@
 #include "Gedeng/Logger.h"
 #include "Gedeng/String.h"
 #include "Gedeng/Vector.h"
+#include "Gedeng/Time.h"
 
 #include "Gedeng/EntryPoint.h"

include/Gedeng/Time.h

@@ -0,0 +1,10 @@
+#pragma once
+
+namespace Gedeng {
+
+class Time {
+public:
+    static unsigned long get_time_ms();
+};
+
+} // namespace Gedeng