Link command menu items to specific page layout (#19706)

- Add a `pageLayoutId` foreign key to `CommandMenuItem`, allowing
command menu items to be scoped to a specific page layout instead of
being globally available
- Filter command menu items by the current page layout on the frontend.
Items with a `pageLayoutId` only appear when viewing that layout, while
items without one remain globally visible
- Create an effect to track the current page layout ID
- Include a seed example: a "Show Notification" command pinned to the
Star history standalone page layout

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-server/src/engine/workspace-manager/workspace-migration/workspace-migration-runner/action-handlers/command-menu-item/services/create-command-menu-item-action-handler.service.ts

@@ -30,7 +30,7 @@ export class CreateCommandMenuItemActionHandlerService extends WorkspaceMigratio
     flatApplication,
     workspaceId,
   }: WorkspaceMigrationActionRunnerArgs<UniversalCreateCommandMenuItemAction>): Promise<FlatCreateCommandMenuItemAction> {
-    const { availabilityObjectMetadataId, frontComponentId } =
+    const { availabilityObjectMetadataId, frontComponentId, pageLayoutId } =
       resolveUniversalRelationIdentifiersToIds({
         flatEntityMaps: allFlatEntityMaps,
         metadataName: action.metadataName,
@@ -48,6 +48,7 @@ export class CreateCommandMenuItemActionHandlerService extends WorkspaceMigratio
         ...action.flatEntity,
         availabilityObjectMetadataId,
         frontComponentId,
+        pageLayoutId,
         applicationId: flatApplication.id,
         id: action.id ?? v4(),
         workspaceId,