Apple has released its iMovie app for the iPhone 4. Announced at WWDC 2010 on June 7th, the iPhone version of iMovie provides iPhone 4 users with a mobile version of Apple’s Mac iMovie application, providing the ability to edit videos directly on the iPhone via onscreen Multi-Touch controls. Users can add video from the iPhone library or record directly using the built-in camera, scrub through and trim videos, and add background music, photos,…