1750 extensibility twenty sdk v2 use twenty sdk to define an object (#15230)

We maintain jsonc object definition but will deprecate them pretty soon

## Before
<img width="1512" height="575" alt="image"
src="https://github.com/user-attachments/assets/d2fa6ca4-c456-4aa9-a1e3-845b61839718"
/>

## After
<img width="1260" height="555" alt="image"
src="https://github.com/user-attachments/assets/ba72f4cf-d443-4967-913c-029bc71f3f48"
/>

packages/twenty-cli/src/commands/app-add.command.ts

@@ -3,11 +3,13 @@ import { randomUUID } from 'crypto';
 import * as fs from 'fs-extra';
 import inquirer from 'inquirer';
 import path from 'path';
+import camelcase from 'lodash.camelcase';
 import { CURRENT_EXECUTION_DIRECTORY } from '../constants/current-execution-directory';
 import { HTTPMethod } from '../types/config.types';
 import { parseJsoncFile, writeJsoncFile } from '../utils/jsonc-parser';
 import { getSchemaUrls } from '../utils/schema-validator';
 import { BASE_SCHEMAS_PATH } from '../constants/constants-path';
+import { getDecoratedClass } from '../utils/get-decorated-class';
 
 export enum SyncableEntity {
   AGENT = 'agent',
@@ -56,6 +58,22 @@ export class AppAddCommand {
 
       const entityData = await this.getEntityToCreateData(entity, entityName);
 
+      if (entity === SyncableEntity.OBJECT) {
+        delete entityData['standardId'];
+        delete entityData['$schema'];
+
+        const objectFileName = `${camelcase(entityName)}.ts`;
+
+        const decoratedObject = getDecoratedClass({
+          data: entityData,
+          name: entityName,
+        });
+
+        await fs.writeFile(path.join(appPath, objectFileName), decoratedObject);
+
+        return;
+      }
+
       const folderName = getFolderName(entity);
 
       const entitiesDir = path.join(appPath, folderName, entityName);