Add Create related records to Record standard actions (#13095)

#12924 Add Create related records to Record standard actions
- add the "Create related records" option to the standard Record actions
in the command menu.
- apply to one-to-many relations.
- command should open a side panel with an empty record for the selected
object.

<img width="518" alt="Screenshot"
src="https://github.com/user-attachments/assets/0388aaf9-b974-4ae1-85bf-2966d89cbbec"
/>

---------

Co-authored-by: Raphaël Bosi <71827178+bosiraphael@users.noreply.github.com>
Co-authored-by: bosiraphael <raphael.bosi@gmail.com>

packages/twenty-server/src/engine/twenty-orm/custom.workspace-entity.ts

@@ -126,6 +126,7 @@ export class CustomWorkspaceEntity extends BaseWorkspaceEntity {
     onDelete: RelationOnDeleteAction.CASCADE,
   })
   @WorkspaceIsNullable()
+  @WorkspaceIsSystem()
   attachments: AttachmentWorkspaceEntity[];
 
   @WorkspaceRelation({