Add comprehensive Terraform infrastructure with Firebase automation

- Create Firebase project, web app, and Firestore database
- Automate Firebase Authentication with email templates
- Configure security rules for user data isolation
- Support Cloud Run and App Engine hosting options
- Add professional email templates for password reset and verification
- Include deployment scripts and comprehensive documentation
- Implement service accounts with minimal required permissions
- Add Docker configuration for containerized deployment

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

terraform/terraform.tfvars.example

@@ -0,0 +1,9 @@
+# Copy this file to terraform.tfvars and fill in your values
+gcp_project_id = "your-gcp-project-id"
+domain_name = "rothbard.yourdomain.com"
+
+# Optional: Override defaults
+# gcp_region = "us-central1"
+# firestore_location = "us-central1"
+# hosting_option = "cloud_run"  # Options: cloud_run, app_engine, gcs
+# environment = "production"