refactor: remove central validation export to improve typescript performance (#2810)

* refactor: remove central validation export to improve typescript performance

* fix: missing package exports change in validation package

* chore: address pull request feedback

apps/nextjs/src/components/board/items/item-actions.tsx

@@ -1,7 +1,7 @@
 import { useCallback } from "react";
 
 import { useUpdateBoard } from "@homarr/boards/updater";
-import type { BoardItemAdvancedOptions } from "@homarr/validation";
+import type { BoardItemAdvancedOptions } from "@homarr/validation/shared";
 
 import type { CreateItemInput } from "./actions/create-item";
 import { createItemCallback } from "./actions/create-item";