Add dashboard rollout commands (#15567)

## Tests

### makeSureDashboardNamingAvailableCommand

Case 1: no dashboard custom object
Case 2: with dashboard custom object

### SeedDashboardViewCommand

Case 1: no existing view
Case 2: with existing view

packages/twenty-server/src/engine/metadata-modules/utils/validate-metadata-name-is-not-reserved-keyword.ts

@@ -28,6 +28,12 @@ const coreObjectNames = [
   'jobs',
   'keyValuePair',
   'keyValuePairs',
+  'pageLayout',
+  'pageLayouts',
+  'pageLayoutTab',
+  'pageLayoutTabs',
+  'pageLayoutWidget',
+  'pageLayoutWidgets',
   'postgresCredential',
   'postgresCredentials',
   'twoFactorMethod',