PARIS, March 3 (Reuters) - President Emmanuel Macron on Tuesday said France was sending its aircraft carrier Charles de Gaulle to the Mediterranean and working to build a coalition that would help secure maritime traffic imperiledby the escalating crisis in the Middle East.In a televised address to the nation, Macron said that action needed to be taken with the Straits of Hormuz closed and the Suez Canal and Red Sea shipping routes threatened by the widening conflict.