Fi 886 - Basic read/validate test generator

[ghost]

This PR adds a "generic" generator that creates basic read and validate tests based on the structure definitions in an IG.
To run, use bundle exec rake inferno:generate['generic','ig_folder'] where ig_folder is the name of the folder in the resource folder.

Submitter:

• This pull request describes why these changes were made
• Internal ticket for this PR: https://oncprojectracking.healthit.gov/support/browse/FI-886
• Internal ticket links to this PR
• Internal ticket is properly labeled (Community/Program)
• Internal ticket has a justification for its Community/Program label
• Code diff has been reviewed for extraneous/missing code
• Tests are included and test edge cases
• Tests/code quality metrics have been run locally and pass

Reviewer 1:

Name:

• Code is maintainable and reusable, reuses existing code and infrastructure
  where appropriate, and accomplishes the task's purpose
• The tests appropriately test the new code, including edge cases
• You have tried to break the code

Reviewer 2:

Name:

• Code is maintainable and reusable, reuses existing code and infrastructure
  where appropriate, and accomplishes the task's purpose
• The tests appropriately test the new code, including edge cases
• You have tried to break the code

[Jammjammjamm]

It would be helpful for me if this were its own method.

[ghost]

The module_info part?

[Jammjammjamm]

The filename, so that we can easily locate the generated module file elsewhere.

[radamson]

Awesome!