- `BaseController` for all `google_cloud` requests
    - `GoogleCloudController` extends `BaseController`

- `ServiceAccountsController`
    - Perform Google OAuth2 on access
    - Flash alert on decline

- `ServiceAccounts # index` renders ID placeholder to show form
    - User's GCP projects are fetched
    - If `cloudresourcemanager` API is enabled, else alert user
        - Alert if no GCP projects found for user
    - Render `gcp_projects` and project `environments` for vue component

- `ServiceAccounts # create` creates service accounts
    - If `iam` API is enabled, else alert user
    - Receives selected GCP project and Environment from form submission
    - Creates service account and service account key
    - Stores GCP project id, service account and key as project CI vars
    - Redirect to `project/google_cloud` main page