feat: manually implement joinColumn (#6022)

This PR introduce a new decorator named `@WorkspaceJoinColumn`, the goal
of this one is to manually declare the join columns inside the workspace
entities, so we don't have to rely on `ObjectRecord` type.

This decorator can be used that way:

```typescript
  @WorkspaceRelation({
    standardId: ACTIVITY_TARGET_STANDARD_FIELD_IDS.company,
    type: RelationMetadataType.MANY_TO_ONE,
    label: 'Company',
    description: 'ActivityTarget company',
    icon: 'IconBuildingSkyscraper',
    inverseSideTarget: () => CompanyWorkspaceEntity,
    inverseSideFieldKey: 'activityTargets',
  })
  @WorkspaceIsNullable()
  company: Relation<CompanyWorkspaceEntity> | null;

  // The argument is the name of the relation above
  @WorkspaceJoinColumn('company')
  companyId: string | null;
```

packages/twenty-server/src/modules/workspace-member/query-hooks/workspace-member-delete-one.pre-query.hook.ts

@@ -27,15 +27,11 @@ export class WorkspaceMemberDeleteOnePreQueryHook
     const authorId = payload.id;
 
     await this.attachmentRepository.delete({
-      author: {
-        id: authorId,
-      },
+      authorId,
     });
 
     await this.commentRepository.delete({
-      author: {
-        id: authorId,
-      },
+      authorId,
     });
   }
 }

packages/twenty-server/src/modules/workspace-member/repositories/workspace-member.repository.ts

@@ -4,7 +4,6 @@ import { EntityManager } from 'typeorm';
 
 import { WorkspaceDataSourceService } from 'src/engine/workspace-datasource/workspace-datasource.service';
 import { WorkspaceMemberWorkspaceEntity } from 'src/modules/workspace-member/standard-objects/workspace-member.workspace-entity';
-import { ObjectRecord } from 'src/engine/workspace-manager/workspace-sync-metadata/types/object-record';
 
 @Injectable()
 export class WorkspaceMemberRepository {
@@ -15,7 +14,7 @@ export class WorkspaceMemberRepository {
   public async getByIds(
     userIds: string[],
     workspaceId: string,
-  ): Promise<ObjectRecord<WorkspaceMemberWorkspaceEntity>[]> {
+  ): Promise<WorkspaceMemberWorkspaceEntity[]> {
     const dataSourceSchema =
       this.workspaceDataSourceService.getSchemaName(workspaceId);
 
@@ -45,7 +44,7 @@ export class WorkspaceMemberRepository {
   public async getByIdOrFail(
     userId: string,
     workspaceId: string,
-  ): Promise<ObjectRecord<WorkspaceMemberWorkspaceEntity>> {
+  ): Promise<WorkspaceMemberWorkspaceEntity> {
     const dataSourceSchema =
       this.workspaceDataSourceService.getSchemaName(workspaceId);
 
@@ -68,7 +67,7 @@ export class WorkspaceMemberRepository {
   public async getAllByWorkspaceId(
     workspaceId: string,
     transactionManager?: EntityManager,
-  ): Promise<ObjectRecord<WorkspaceMemberWorkspaceEntity>[]> {
+  ): Promise<WorkspaceMemberWorkspaceEntity[]> {
     const dataSourceSchema =
       this.workspaceDataSourceService.getSchemaName(workspaceId);