Files v2 - Use Files field in attachment (#17707)

- Add FILES field on attachment
- Adapt Attachment logic in front to use new resolver/controller
- Update files-field logic to infer applicationId from fieldMetadataId +
ask for fieldMetadataId in upload resolver
- Design update


To do in next PR : 
- Adapt activity files logic

packages/twenty-server/src/engine/workspace-manager/twenty-standard-application/utils/field-metadata/compute-attachment-standard-flat-field-metadata.util.ts

@@ -1,10 +1,10 @@
+import { STANDARD_OBJECTS } from 'twenty-shared/metadata';
 import {
   DateDisplayFormat,
   FieldMetadataType,
   RelationOnDeleteAction,
   RelationType,
 } from 'twenty-shared/types';
-import { STANDARD_OBJECTS } from 'twenty-shared/metadata';
 
 import { type FlatFieldMetadata } from 'src/engine/metadata-modules/flat-field-metadata/types/flat-field-metadata.type';
 import { type AllStandardObjectFieldName } from 'src/engine/workspace-manager/twenty-standard-application/types/all-standard-object-field-name.type';
@@ -126,6 +126,27 @@ export const buildAttachmentStandardFlatFieldMetadatas = ({
     twentyStandardApplicationId,
     now,
   }),
+  file: createStandardFieldFlatMetadata({
+    objectName,
+    workspaceId,
+    context: {
+      fieldName: 'file',
+      type: FieldMetadataType.FILES,
+      label: 'File',
+      description: 'Attachment file',
+      icon: 'IconFileUpload',
+      isNullable: true,
+      isUIReadOnly: true,
+      settings: {
+        maxNumberOfValues: 1,
+      },
+    },
+    standardObjectMetadataRelatedEntityIds,
+    dependencyFlatEntityMaps,
+    twentyStandardApplicationId,
+    now,
+  }),
+  //deprecated
   fullPath: createStandardFieldFlatMetadata({
     objectName,
     workspaceId,
@@ -143,6 +164,7 @@ export const buildAttachmentStandardFlatFieldMetadatas = ({
     twentyStandardApplicationId,
     now,
   }),
+  //deprecated
   fileCategory: createStandardFieldFlatMetadata({
     objectName,
     workspaceId,

packages/twenty-server/src/engine/workspace-manager/workspace-migration/constant/standard-field-ids.ts

@@ -33,6 +33,7 @@ export const ATTACHMENT_STANDARD_FIELD_IDS = {
   name: '20202020-87a5-48f8-bbf7-ade388825a57',
   fullPath: '20202020-0d19-453d-8e8d-fbcda8ca3747',
   type: '20202020-a417-49b8-a40b-f6a7874caa0d',
+  file: '20202020-15db-460e-8166-c7b5d87ad4be',
   fileCategory: '20202020-8c3f-4d9e-9a1b-2e5f7a8c9d0e',
   createdBy: '395be3bd-a5c9-463d-aafe-9bc3bbec3f15',
   updatedBy: '376239d1-3e65-4cb6-b5d8-e0917d43cc93',