Create twenty app improvements (#20688)

create-twenty-app updates:
- remove --example option
- sync --once when scaffolding an applicaiton
- rename --api-url option to --workspace-url
- create a standalone page when scaffolding an app
<img width="1494" height="765" alt="image"
src="https://github.com/user-attachments/assets/0e35ed0c-b0aa-466c-9f56-7939294fd2cf"
/>

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packages/twenty-front/src/modules/page-layout/utils/__tests__/convertPageLayoutToTabLayouts.test.ts

@@ -16,6 +16,7 @@ describe('convertPageLayoutToTabLayouts', () => {
       name: 'Page Layout 1',
       type: PageLayoutType.RECORD_PAGE,
       objectMetadataId: 'object-metadata-1',
+      universalIdentifier: '20202020-0000-0000-0000-000000000001',
       tabs: [
         {
           id: 'tab-1',
@@ -100,6 +101,7 @@ describe('convertPageLayoutToTabLayouts', () => {
       name: 'Page Layout 1',
       type: PageLayoutType.RECORD_PAGE,
       objectMetadataId: 'object-metadata-1',
+      universalIdentifier: '20202020-0000-0000-0000-000000000001',
       tabs: [
         {
           id: 'tab-1',