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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Co-authored-by: cubic-dev-ai[bot] <191113872+cubic-dev-ai[bot]@users.noreply.github.com>
Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>

packages/twenty-front/src/modules/page-layout/widgets/components/__stories__/DashboardWidgetPlaceholder.stories.tsx

@@ -23,6 +23,7 @@ const mockPageLayout: PageLayout = {
   name: 'Test Layout',
   type: PageLayoutType.DASHBOARD,
   objectMetadataId: null,
+  universalIdentifier: '20202020-0000-0000-0000-000000000001',
   tabs: [],
   createdAt: '2024-01-01T00:00:00.000Z',
   updatedAt: '2024-01-01T00:00:00.000Z',

packages/twenty-front/src/modules/page-layout/widgets/components/__stories__/WidgetRenderer.stories.tsx

@@ -140,6 +140,7 @@ const createPageLayoutWithWidget = (
   name: 'Mock Page Layout',
   type: pageLayoutType,
   objectMetadataId: companyObjectMetadataItem.id,
+  universalIdentifier: '20202020-0000-0000-0000-000000000001',
   tabs: [
     {
       __typename: 'PageLayoutTab',
@@ -1747,6 +1748,7 @@ export const Catalog: CatalogStory<Story, typeof WidgetRenderer> = {
       name: 'Mock Page Layout',
       type: pageLayoutType,
       objectMetadataId: companyObjectMetadataItem.id,
+      universalIdentifier: '20202020-0000-0000-0000-000000000001',
       tabs:
         variant === 'side-column'
           ? [

packages/twenty-front/src/modules/page-layout/widgets/field/components/__stories__/FieldWidget.stories.tsx

@@ -288,6 +288,7 @@ const createPageLayoutWithWidget = (
   name: 'Mock Page Layout',
   type: PageLayoutType.RECORD_PAGE,
   objectMetadataId,
+  universalIdentifier: '20202020-0000-0000-0000-000000000001',
   tabs: [
     {
       __typename: 'PageLayoutTab' as const,

packages/twenty-front/src/modules/page-layout/widgets/fields/components/__stories__/FieldsWidget.stories.tsx

@@ -138,6 +138,7 @@ const createPageLayoutWithWidget = (
   name: 'Mock Page Layout',
   type: PageLayoutType.RECORD_PAGE,
   objectMetadataId,
+  universalIdentifier: '20202020-0000-0000-0000-000000000001',
   tabs: [
     {
       __typename: 'PageLayoutTab' as const,