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-front/src/modules/page-layout/states/contexts/PageLayoutComponentInstanceContext.ts

@@ -0,0 +1,4 @@
+import { createComponentInstanceContext } from '@/ui/utilities/state/component-state/utils/createComponentInstanceContext';
+
+export const PageLayoutComponentInstanceContext =
+  createComponentInstanceContext();