Temp extension to add markdown code block support for Terraform that will be unnecessary once this PR is merged :-)
VS Code supports tagging of code blocks in markdown to enable colorization, but this isn't currently working for terraform.
E.g. the following gets colorized
But an equivalent terraform codeblock doesn't
This extension wires up the markdown block to the Terraform language.
Requires the Terraform extension for VS Code as that provides the actual language support for Terraform