Runway is moving beyond building AI video models and into shaping what gets built on top of them.  The AI video generation startup has launched a $10 million venture fund to invest in early-stage companies building across AI, media, and world simulation, the company’s founders told TechCrunch. It’s also rolling out a Builders program offering seed to series C startups free API credits, a move that suggests Runway wants to create an ecosystem around what it calls “video intelligence.” Runway has