Offer Falco rules json schema to schemastore.org

Motivation

We are trying to validate our custom Falco rules but there's no official Falco rules json schema to validate our rules.

Feature

Create an official Falco rules json schema that is available in the schemastore: https://www.schemastore.org/json/

Alternatives

Additional context

This schema already exists: https://github.com/falcosecurity/falco-playground/blob/main/src/components/Editor/falcoSchema.json

• However it is not compatible with Falco rules for clients since it does not allow the override and it forces overriden rules to still have desc, output and priority