[FEATURE]: Provide JSON Schema for autocompletion of Garden configuration files

[worldofgeese]

Feature Request

Background / Motivation

To improve quality of life by providing autocompletions when editing in editors that take JSON Schema like VS Code, we can provide a e.g. garden.json schema VS Code users can reference with the Yaml Schemas object in their settings.json.

See this article on creating JSON Schemas for VS Code. I heard a rumor you might already have a JSON Schema, @edvald? :eyes:

How important is this feature for you/your team?

🌹 It’s a nice to have, but nice things are nice 🙂

This feature request was originally requested by @pepov.