Amazon is working on a new DVR device for the streaming era that that would be a household’s hub for the company’s online video. Citing sources, Bloomberg reports that the gadget — known in-house as “Frank” — would push consumers to bypass cable and satellite TV while dinging TiVo’s market for digital video recorders. Connecting to Amazon's Fire TV boxes using the same tech as its Echo speakers, the new device will allow users to record live TV and stream the video to a…