feat: implement trainee tasks management module in painel

[Paulopk0]

Description

Implementation of a comprehensive module for managing trainee tasks and sub-activities, integrated into the administrative panel. This system enables precise progress tracking, dynamic sub-activity management via AJAX, and provides a simplified public-facing page for external consultation.

Changes

• Administrative Dashboard: Developed in index.php featuring dynamic listing and filtering powered by DataTables.
• Activity Management: Implemented AJAX logic in trainee_tasks_get_activities.php for row expansion and real-time sub-task visualization.
• Full CRUD Support: Added creation, editing, and deletion workflows for both main tasks and detailed activities (trainee_tasks_form.php, trainee_tasks_activity_form.php, etc.).
• Public Interface: Created public.php to allow external users to view progress without administrative access.
• Local Assets: Bundled Bootstrap, jQuery, and DataTables to ensure module stability and performance regardless of external CDNs.
• Custom Styling: Developed trainee_tasks_styles.css for a tailored UI/UX matching the existing panel.

Visuals