refactor: Move API keys into their own table (no-changelog) (#10629)

Co-authored-by: कारतोफ्फेलस्क्रिप्ट™ <aditya@netroy.in>

packages/cli/src/databases/entities/api-key.ts

@@ -0,0 +1,25 @@
+import { Column, Entity, Index, ManyToOne, Unique } from '@n8n/typeorm';
+
+import { WithTimestampsAndStringId } from './abstract-entity';
+import { User } from './user';
+
+@Entity('user_api_keys')
+@Unique(['userId', 'label'])
+export class ApiKey extends WithTimestampsAndStringId {
+	@ManyToOne(
+		() => User,
+		(user) => user.id,
+		{ onDelete: 'CASCADE' },
+	)
+	user: User;
+
+	@Column({ type: String })
+	userId: string;
+
+	@Column({ type: String })
+	label: string;
+
+	@Index({ unique: true })
+	@Column({ type: String })
+	apiKey: string;
+}