QuantumNous/new-api-plugins ? reverse-engineered prompt

Build me an official plugin marketplace repo for new api, where each plugin is a single self contained JavaScript file in a versioned folder, with a changelog next to it and a generated index file at the root.

I want the layout to support task plugins, especially async ones for things like video or music generation, and I want the marketplace to clearly list the latest version, available versions, and a sha256 for each published plugin. Make sure the index is generated from the compiled plugin metadata, not hand edited, and add a small tool that can build and check it.

Please include the docs for the plugin API and the marketplace format, plus guidance for how to add a new plugin, regenerate the index, and keep published versions immutable. If there is any ambiguity about the current plugin API docs, look up the latest details online and keep everything consistent with that.