Add export and import functionality for folders and note contents (serverless solution) #17
Description
Description:
Implement an export and import feature for folders and note contents. The goal is to enable users to back up and restore their data without relying on a server — ideally through a local or file-based solution (e.g., JSON or ZIP file).
Expected behavior:
-
Users can export all folders and their note contents into a single local file (e.g., .json or .zip).
-
Users can import that file to restore their previous data structure and notes.
The process should work without requiring any external server or cloud connection.
Additional notes:
The exact data format and user flow for the export/import process are still to be defined.