Snapchat is secretly planning the launch of its first full-fledged developer platform, currently called Snapkit. The platform’s prototypes indicate it will let other apps offer a ‘login with Snapchat’ options, use the Bitmoji avatars it acquired, and host a version of Snap’s full-featured camera software that can share back to Snapchat.Multiple sources confirm Snap Inc is currently in talks with several app developers to integrate Snapkit.