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/utils/validateAndExtractFolderId.ts

@@ -0,0 +1,29 @@
+import { FAVORITE_DROPPABLE_IDS } from '@/favorites/constants/FavoriteDroppableIds';
+
+export const validateAndExtractFolderId = (
+  droppableId: string,
+): string | null => {
+  if (droppableId === FAVORITE_DROPPABLE_IDS.ORPHAN_FAVORITES) {
+    return null;
+  }
+
+  if (droppableId.startsWith(FAVORITE_DROPPABLE_IDS.FOLDER_HEADER_PREFIX)) {
+    const folderId = droppableId.replace(
+      FAVORITE_DROPPABLE_IDS.FOLDER_HEADER_PREFIX,
+      '',
+    );
+    if (!folderId) throw new Error(`Invalid folder header ID: ${droppableId}`);
+    return folderId;
+  }
+
+  if (droppableId.startsWith(FAVORITE_DROPPABLE_IDS.FOLDER_PREFIX)) {
+    const folderId = droppableId.replace(
+      FAVORITE_DROPPABLE_IDS.FOLDER_PREFIX,
+      '',
+    );
+    if (!folderId) throw new Error(`Invalid folder ID: ${droppableId}`);
+    return folderId;
+  }
+
+  throw new Error(`Invalid droppable ID format: ${droppableId}`);
+};