add -json args for terraform code test

[Ericwww]

Background
some Terraform or OpenTofu command support -json flag so that they can output information in json format which can be understood or parsed by some program.

Describe the solution you'd like
add a field (e.g. named JSON) to Options and add -json args for those which support json output command

Describe alternatives you've considered
I also noticed that you have exported RunTerraformCommandE function so that we could wrap our own function to support -json flag for now.

Additional context
tofu init support -json flag but terraform init not. So, if you planned to accept this feature request, you might need to consider of different implementation.