Refactor auth-service to iam-service and update related configurations

- Renamed auth-service to iam-service across various files for consistency.
- Updated deployment workflows, database migration scripts, and documentation to reflect the service name change.
- Enhanced bilingual documentation for clarity on the new service structure and usage.
- Removed outdated references to auth-service in scripts and configuration files to streamline the project structure.

scripts/dev/setup-env.sh

@@ -92,12 +92,12 @@ echo "   - Set DATABASE_URL from Neon Console"
 echo "   - Each service needs its own database"
 echo ""
 echo "3. Create databases in Neon:"
-echo "   - goodgo_auth_dev (for auth-service)"
+echo "   - goodgo_iam_dev (for iam-service)"
 echo "   - goodgo_user_dev (for user-service)"
 echo "   - etc."
 echo ""
 echo "4. Run migrations:"
-echo "   ./scripts/db/migrate.sh auth-service dev"
+echo "   ./scripts/db/migrate.sh iam-service dev"
 echo ""
 echo "5. Start development:"
 echo "   ./scripts/dev/start-all.sh"