Add additional drive capacity change support (#8867)

* Add additional drive capacity change support

* Update packages/backend/src/server/api/endpoints/admin/drive-capacity-override.ts

Co-authored-by: Johann150 <johann@qwertqwefsday.eu>

* 🎨

* show instance default capacity in placeholder

* fix

* update api/drive

* fix

* remove :

* fix lint

Co-authored-by: Johann150 <johann@qwertqwefsday.eu>
Co-authored-by: tamaina <tamaina@hotmail.co.jp>

packages/backend/src/models/entities/user.ts

@@ -218,6 +218,12 @@ export class User {
 	})
 	public token: string | null;
 
+	@Column('integer', {
+		nullable: true,
+		comment: 'Overrides user drive capacity limit',
+	})
+	public driveCapacityOverrideMb: number | null;
+
 	constructor(data: Partial<User>) {
 		if (data == null) return;