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/engine/workspace-manager/twenty-standard-application/utils/field-metadata/compute-person-standard-flat-field-metadata.util.ts

@@ -229,6 +229,7 @@ export const buildPersonStandardFlatFieldMetadatas = ({
     twentyStandardApplicationId,
     now,
   }),
+  //deprecated
   avatarUrl: createStandardFieldFlatMetadata({
     objectName,
     workspaceId,
@@ -246,6 +247,26 @@ export const buildPersonStandardFlatFieldMetadatas = ({
     twentyStandardApplicationId,
     now,
   }),
+  avatarFile: createStandardFieldFlatMetadata({
+    objectName,
+    workspaceId,
+    context: {
+      fieldName: 'avatarFile',
+      type: FieldMetadataType.FILES,
+      label: 'Avatar File',
+      description: "Contact's avatar file",
+      icon: 'IconFileUpload',
+      isSystem: true,
+      isNullable: true,
+      settings: {
+        maxNumberOfValues: 1,
+      },
+    },
+    standardObjectMetadataRelatedEntityIds,
+    dependencyFlatEntityMaps,
+    twentyStandardApplicationId,
+    now,
+  }),
   position: createStandardFieldFlatMetadata({
     objectName,
     workspaceId,