Feature request

Current behavior

The new arduino-cli.yaml config file, the new Settings API everything works perfectly 💪, however, I am missing the JSON schema for the configuration file. As a consumer of the CLI, I want to programmatically validate the config file before I use it.

As a start, the actual JSON schema could be released with the CLI, inside the archive. Once it gets rock solid, perhaps it could be published to http://schemastore.org/json/.

Expected behavior

Environment

• CLI version (output of arduino-cli version):
• OS and platform:

Additional context