Favorites Drag and Drop Implementation (#8979)

Adds drag and drop functionality for favorites management, allowing
users to:

- Move favorites between folders
- Move favorites from folders to orphan section
- Move orphan favorites into folders

Known Issues:
Drop detection at folder boundaries requires spacing workaround

packages/twenty-front/src/modules/favorites/constants/FavoriteDroppableIds.ts

@@ -0,0 +1,5 @@
+export const FAVORITE_DROPPABLE_IDS = {
+  ORPHAN_FAVORITES: 'orphan-favorites',
+  FOLDER_PREFIX: 'folder-',
+  FOLDER_HEADER_PREFIX: 'folder-header-',
+};