Page layout refactoring (#14535)

In this PR:
- Refactored the page layout renderer
- Converted all the states to component states
- Removed the page layout edition in settings

TODOs in next PRs:
- Fix bug with the drag selector not taking the scroll into account to
display the dragged area
- Readd the tab edition in edit mode

packages/twenty-shared/src/types/SettingsPath.ts

@@ -54,7 +54,4 @@ export enum SettingsPath {
   RoleDetail = 'roles/:roleId',
   RoleObjectLevel = 'roles/:roleId/object/:objectMetadataId',
   RoleAddObjectLevel = 'roles/:roleId/add-object-permission',
-  PageLayout = 'page-layout',
-  PageLayoutNew = 'page-layout/new',
-  PageLayoutEdit = 'page-layout/:id',
 }