move automation out of core

apps/companion/main/automation/application/ports/CheckoutServicePort.ts

@@ -0,0 +1,7 @@
+import { Result } from '@gridpilot/shared/result/Result';
+import type { CheckoutInfoDTO } from '../dto/CheckoutInfoDTO';
+
+export interface CheckoutServicePort {
+  extractCheckoutInfo(): Promise<Result<CheckoutInfoDTO>>;
+  proceedWithCheckout(): Promise<Result<void>>;
+}