Feature: Provide a file describing the output data format

As a developer I want to be able to see the schema of the output data format So that I can make engineering decisions about the footprint of different libraries, methods, etc.

The output should be in JSON format, to be parsable downstream by other tools.

Scenario: Provide a file describing the output data format

Given I have the memory tabulator package

When I run the schema command

Then I should be provided the schema file