A little late to the party here, but we (https://www.bismuthos.com) offer something already to scratch this itch. We provide a workspace to build Python backends. Chat on the left, code and visual editors on the right. However, we also handle deployments, data storage (we have a blob store), serving (we built a home grown function runtime) and logging. The experience is tightly integrated with the copilot and the idea is to get ideas off the ground as quickly as possible. We're early days and you can try it for free right now.