Add Music fluctuations project and Chinese plan docs

MVS/Music fluctuations/source/time/Clock.cpp

@@ -0,0 +1,17 @@
+#include"Clock.h"
+#include <iomanip>
+Clock::Clock(){}
+
+Clock::~Clock(){}
+
+double Clock::Update()
+{
+	auto now = std::chrono::high_resolution_clock::now();
+	auto nowTime = std::chrono::duration_cast<std::chrono::nanoseconds>(now.time_since_epoch()).count();
+	long long duration = nowTime - m_lastTime;
+	m_lastTime = nowTime;
+	float result = duration / 1000000000.0f;
+	return result;
+}
+
+//std::cout << std::fixed << std::setprecision(15) <<deltaTime << std::endl;