Add text exporters

[SarcasticMoose]

Currently, the project does not support exporting data to plain text–based formats. Adding text exporters would improve interoperability and allow users to easily extract and reuse data outside the application.

Proposed Solution

Implement exporters that allow saving data in common text formats, such as:

• JSON
• XML
• etc.

The exporters should be modular and reusable, following the existing architecture for export functionality (if any).