Roger Federer, “horrified” by the images from Ukraine, announced Friday that he is donating $500,000 (452,000 euros) through his foundation “to establish access to continued schooling for Ukrainian children.” “My family and I are horrified seeing pictures from Ukraine and heartbroken for the innocent people who have been so terribly affected. We stand for peace,” the tennis legend wrote in a tweet tagged with yellow and blue hearts and a dove. “About 6 million Ukrainian children are currently out of school and we know it is a very critical time to provide access to education,” wrote Federer. M…