Pre hook for dashboard creation + updates on the entity (#14354)

Closes https://github.com/twentyhq/core-team-issues/issues/1417

- The pre-hook creates a page-layout and links it to the dashboard
- Added `position`, `createdBy`, `attachments`, `searchVector`,
`favorites` to the dashboard entity
- Updated the view seed
- Updated the page layout services to work within a transaction

packages/twenty-server/src/modules/attachment/standard-objects/attachment.workspace-entity.ts

@@ -1,9 +1,9 @@
 import { msg } from '@lingui/core/macro';
 import { FieldMetadataType } from 'twenty-shared/types';
 
+import { RelationOnDeleteAction } from 'src/engine/metadata-modules/field-metadata/interfaces/relation-on-delete-action.interface';
 import { RelationType } from 'src/engine/metadata-modules/field-metadata/interfaces/relation-type.interface';
 import { Relation } from 'src/engine/workspace-manager/workspace-sync-metadata/interfaces/relation.interface';
-import { RelationOnDeleteAction } from 'src/engine/metadata-modules/field-metadata/interfaces/relation-on-delete-action.interface';
 
 import { BaseWorkspaceEntity } from 'src/engine/twenty-orm/base.workspace-entity';
 import { CustomWorkspaceEntity } from 'src/engine/twenty-orm/custom.workspace-entity';
@@ -18,6 +18,7 @@ import { ATTACHMENT_STANDARD_FIELD_IDS } from 'src/engine/workspace-manager/work
 import { STANDARD_OBJECT_ICONS } from 'src/engine/workspace-manager/workspace-sync-metadata/constants/standard-object-icons';
 import { STANDARD_OBJECT_IDS } from 'src/engine/workspace-manager/workspace-sync-metadata/constants/standard-object-ids';
 import { CompanyWorkspaceEntity } from 'src/modules/company/standard-objects/company.workspace-entity';
+import { DashboardWorkspaceEntity } from 'src/modules/dashboard/standard-objects/dashboard.workspace-entity';
 import { NoteWorkspaceEntity } from 'src/modules/note/standard-objects/note.workspace-entity';
 import { OpportunityWorkspaceEntity } from 'src/modules/opportunity/standard-objects/opportunity.workspace-entity';
 import { PersonWorkspaceEntity } from 'src/modules/person/standard-objects/person.workspace-entity';
@@ -158,6 +159,22 @@ export class AttachmentWorkspaceEntity extends BaseWorkspaceEntity {
   @WorkspaceJoinColumn('opportunity')
   opportunityId: string | null;
 
+  @WorkspaceRelation({
+    standardId: ATTACHMENT_STANDARD_FIELD_IDS.dashboard,
+    type: RelationType.MANY_TO_ONE,
+    label: msg`Dashboard`,
+    description: msg`Attachment dashboard`,
+    icon: 'IconLayout',
+    inverseSideTarget: () => DashboardWorkspaceEntity,
+    inverseSideFieldKey: 'attachments',
+    onDelete: RelationOnDeleteAction.CASCADE,
+  })
+  @WorkspaceIsNullable()
+  dashboard: Relation<DashboardWorkspaceEntity> | null;
+
+  @WorkspaceJoinColumn('dashboard')
+  dashboardId: string | null;
+
   @WorkspaceDynamicRelation({
     type: RelationType.MANY_TO_ONE,
     argsFactory: (oppositeObjectMetadata) => ({