feat: soft delete (#6576)

Implement soft delete on standards and custom objects.
This is a temporary solution, when we drop `pg_graphql` we should rely
on the `softDelete` functions of TypeORM.

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Lucas Bordeau <bordeau.lucas@gmail.com>

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

@@ -26,6 +26,7 @@ import { WorkflowWorkspaceEntity } from 'src/modules/workflow/common/standard-ob
   labelPlural: 'Task Targets',
   description: 'An task target',
   icon: 'IconCheckbox',
+  softDelete: true,
 })
 @WorkspaceIsSystem()
 export class TaskTargetWorkspaceEntity extends BaseWorkspaceEntity {

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

@@ -32,6 +32,7 @@ import { WorkspaceMemberWorkspaceEntity } from 'src/modules/workspace-member/sta
   description: 'A task',
   icon: 'IconCheckbox',
   labelIdentifierStandardId: TASK_STANDARD_FIELD_IDS.title,
+  softDelete: true,
 })
 export class TaskWorkspaceEntity extends BaseWorkspaceEntity {
   @WorkspaceField({