Update development-guide to include installation of Terraform #100
Description
💡 Summary
We should include manual installation steps for Terraform.
Motivation and context
Why does this work belong in this project?
Right now unless you run the laptop script instructed in the mac-env-setup users won't have TF installed on their systems. This could lead to some issues if they attempt to work any TF related project. The version should be pinned to the version specified in cisagov/setup-env-github-action.
Acceptance criteria
- Development guide includes steps of how to manually install TF.