* Add a schema file for vcpkg.json
* [vcpkg.schema.json] fix $ref fields
Per json schema, having any other field in a `{ "$ref": ""}` object is invalid.
* [vcpkg.schema.json] change case to reflect usage
* [vcpkg.schema.json] check reserved names for identifiers
* [vcpkg.schema.json] add an $id field
* [vcpkg.schema.json] Apply suggestions from code review
Co-authored-by: nicole mazzuca <mazzucan@outlook.com>
* [vcpkg.schema.json] Apply suggestions from code review
Co-authored-by: nicole mazzuca <mazzucan@outlook.com>