Add Community Discussion Forum Integration

[pmady]

Description

Integrate a community discussion feature for learners to ask questions and share experiences.

Requirements

• GitHub Discussions integration or similar
• Categories for each certification
• Q&A format with accepted answers
• Search functionality
• Upvoting system

Acceptance Criteria

• Enable GitHub Discussions on repository
• Create discussion categories for each cert
• Add links to discussions from documentation
• Create discussion templates
• Moderation guidelines