Add mentions feature to objects in notes (#16373)

Issue #15755 

### Context
As shown in the issue, users should be able to @ objects and have it be
linked to their associated page.

### Changes Made
- Updated the BlockNote schema to include the newly created
MentionInlineContent that displays an object using a RecordChip
- Added the UI for the menu that appears to select the requested object
(similar to this example:
https://www.blocknotejs.org/examples/ui-components/suggestion-menus-slash-menu-component)
- Added a hook to retrieve the data for the UI
- Added the @ trigger to the block editor

### Result 

https://github.com/user-attachments/assets/87dae6a2-ad7a-4642-80b2-8b1751feae24

---------

Co-authored-by: Félix Malfait <felix.malfait@gmail.com>
Co-authored-by: Félix Malfait <felix@twenty.com>
Co-authored-by: Cursor <cursoragent@cursor.com>

packages/twenty-front/src/modules/ui/input/constants/MentionMenuDropdownClickOutsideId.ts

@@ -0,0 +1,2 @@
+export const MENTION_MENU_DROPDOWN_CLICK_OUTSIDE_ID =
+  'mention-menu-dropdown-click-outside-id';

packages/twenty-front/src/modules/ui/input/constants/MentionMenuListId.ts

@@ -0,0 +1 @@
+export const MENTION_MENU_LIST_ID = 'mention-menu-list-id';