Add Terraform Plan to CI/CD

[robg-test]

We can use the Academy Org for planning, however I recommend we create a new account in that org to do so.

This PR runs the command

"terraform plan" command using the provided example.tf
e.g.

cd examples
terraform plan

This will allow us to plot out the Architecture and could help prevent bugs with the terraform code, We will need examples for other modules too!