Add Pre requirements section

Let the user know the necessary roles for the service account that runs the terraform script.

Troubleshooting section in README

Add Troubleshooting section to README

Virtual Assets

Enables virtual assets to the service account.

Organizational Access Check

Allows the user to select whether the service account will access the organization or just a project.

Initial release

What's Changed

• feat(serviceAccount): GCP service account module [ENG-44162] by @tonygc in #2

New Contributors

• @tonygc made their first contribution in #2

Full Changelog: https://github.com/drata/gcp-terraform-drata-setup/commits/1.0.0