refactor(core): Cache workflow ownership (#6738)

* refactor: Set up ownership service

* refactor: Specify cache keys and values

* refactor: Replace util with service calls

* test: Mock service in tests

* refactor: Use dependency injection

* test: Write tests

* refactor: Apply feedback from Omar and Micha

* test: Fix tests

* test: Fix missing spot

* refactor: Return user entity from cache

* refactor: More dependency injection!

packages/cli/src/services/cache.service.ts

@@ -9,6 +9,10 @@ import { LoggerProxy, jsonStringify } from 'n8n-workflow';
 
 @Service()
 export class CacheService {
+	/**
+	 * Keys and values:
+	 * - `'cache:workflow-owner:${workflowId}'`: `User`
+	 */
 	private cache: RedisCache | MemoryCache | undefined;
 
 	async init() {