Uber Technologies Inc.’s gig-economy workforce now includes programmers. The company is expanding beyond its rideshare roots to enter a hot new market: helping other businesses outsource some of their artificial intelligence development to independent contractors.Its new AI training and data labeling division, called Scaled Solutions, builds on an internal team that tackles large-scale annotation tasks for Uber’s rideshare, food delivery and freight units. According to its website, Scaled Soluti...