ExtractVariables extracts the input variables and local values from the provided file.

ParseHclToJson parses a provided HCL file to JSON and dereferences any known variables using the provided variables.

ParseModule iterates through all the provided files in a module (.tf, terraform.tfvars, and *.auto.tfvars files) It extracts the variables from each one, merges them, and dereferences them one by one.