Refactor desktop app into separate client and proxy apps

apps/yaak-client/hooks/useActiveFolder.ts

@@ -0,0 +1,9 @@
+import { foldersAtom } from '@yaakapp-internal/models';
+import { atom } from 'jotai';
+import { activeFolderIdAtom } from './useActiveFolderId';
+
+export const activeFolderAtom = atom((get) => {
+  const activeFolderId = get(activeFolderIdAtom);
+  const folders = get(foldersAtom);
+  return folders.find((r) => r.id === activeFolderId) ?? null;
+});