Pass command line options to terraform-docs

[metmajer]

With segmentio/terraform-docs being maintained again, it would be great to leverage some new terraform-docs options, such as:

• --no-sort: no name-sorting of inputs and outputs when the order of variables should be preserved
• --with-aggregate-type-defaults: renders default values of types list and map as JSON string into the document

Ideally, the hook would support a pass-through option that relays command line arguments on to terraform-docs. @antonbabenko: Thoughts?