By Tom Westbrook SINGAPORE (Reuters) – The euro made a firm start to the week on investor relief that incumbent Emmanuel Macron led first-round voting in the French presidential election, while other moves were slight ahead of central bank meetings in Europe, Canada and New Zealand. The euro briefly flickered as high as $1.0955 in thin early hours of the Asia session, before settling about 0.15% higher than Friday’s close at $1.0890. It was also firmer on sterling and the yen. With 88% of votes counted, Macron garnered 27.41% and his far-right challenger Marine Le Pen was next with 24.9%. They…