After developing a TypeScript app, my goal is to convert it into a VS Code extension and publish it on the Visual Studio Code Marketplace. I have attempted following the steps in the official documentation, but found that the commands provided there create a template from scratch. Trying to convert my existing project led to encountering this error: https://i.sstatic.net/P4kbm.png. My main objective is simply to transform my current project into a VS Code extension.