Link command menu items to specific page layout (#19706)

- Add a `pageLayoutId` foreign key to `CommandMenuItem`, allowing
command menu items to be scoped to a specific page layout instead of
being globally available
- Filter command menu items by the current page layout on the frontend.
Items with a `pageLayoutId` only appear when viewing that layout, while
items without one remain globally visible
- Create an effect to track the current page layout ID
- Include a seed example: a "Show Notification" command pinned to the
Star history standalone page layout

---------

Co-authored-by: Charles Bochet <charles@twenty.com>

packages/twenty-front/src/modules/command-menu-item/utils/doesCommandMenuItemMatchPageLayoutId.ts

@@ -0,0 +1,6 @@
+import { isDefined } from 'twenty-shared/utils';
+import { type CommandMenuItemFieldsFragment } from '~/generated-metadata/graphql';
+
+export const doesCommandMenuItemMatchPageLayoutId =
+  (pageLayoutId: string | null) => (item: CommandMenuItemFieldsFragment) =>
+    !isDefined(item.pageLayoutId) || item.pageLayoutId === pageLayoutId;