File - Migrate avatarUrl > avatarFile on person (data migration + logic) + Attachment data migration (#17752)

- Migration command
    - Check IS_FILES_FIELD_MIGRATED:false
    - Check or create avatarFile field
    - Fetch all people with avatarUrl
           - Move (Copy/move) file in storage
           - Create core.file record
           - Update person record
           
    - bonus : attachment migration  : fullPath > file (same logic)
   
- BE logic
    - Add avatarFile field on person

- FE logic 
   - Adapt logic to upload on/display avatarFile data

The whole imageIdentifier logic will be done later

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

@@ -7,6 +7,7 @@ import {
   type PhonesMetadata,
 } from 'twenty-shared/types';
 
+import { type FileOutput } from 'src/engine/api/common/common-args-processors/data-arg-processor/types/file-item.type';
 import { BaseWorkspaceEntity } from 'src/engine/twenty-orm/base.workspace-entity';
 import { type FieldTypeAndNameMetadata } from 'src/engine/workspace-manager/utils/get-ts-vector-column-expression.util';
 import { type EntityRelation } from 'src/engine/workspace-manager/workspace-migration/types/entity-relation.interface';
@@ -42,7 +43,9 @@ export class PersonWorkspaceEntity extends BaseWorkspaceEntity {
   phone: string | null;
   phones: PhonesMetadata;
   city: string | null;
+  /** @deprecated Use `avatarFile` field instead */
   avatarUrl: string | null;
+  avatarFile: FileOutput[] | null;
   position: number;
   createdBy: ActorMetadata;
   updatedBy: ActorMetadata;