aa.gusti / opensipkd-base

- Implemented new readonly templates for radio choices, checkboxes, captcha, and various input types (e.g., date, datetime, password, image).
- Added support for displaying structured data in readonly formats, including mapping and sequence items.
- Enhanced select and select2 templates to support optgroups and improved styling.
- Introduced JavaScript callbacks for dynamic behavior in readonly fields, such as formatting and AJAX loading for dependent fields.
- Updated rich text and textarea templates to ensure proper rendering of content.
- Improved overall structure and maintainability of widget templates.