1630 extensibility twenty cli ability to create edit and delete fields (#15501)

As title

- adds decorators in twenty-sdk
- update twenty-cli load-manifest to it gets @FieldMetadata infos +
testing
- update twenty-server so it CRUD fields properly, using
universalIdentifier
- Fix UI so we can update managed objects records
- move FieldMetadata items from twenty-server to twenty-shared

packages/twenty-server/src/engine/workspace-manager/workspace-migration-runner/utils/convert-on-delete-action-to-on-delete.util.ts

@@ -1,4 +1,4 @@
-import { type RelationOnDeleteAction } from 'src/engine/metadata-modules/relation-metadata/relation-on-delete-action.type';
+import { type RelationOnDeleteAction } from 'twenty-shared/types';
 
 export const convertOnDeleteActionToOnDelete = (
   onDeleteAction: RelationOnDeleteAction | undefined,