feat(feedback): implémentation complète du formulaire de feedback

[georgegale228]

Add a comprehensive feedback collection system for Python Togo events. Participants can now submit their reviews via a public endpoint, and administrators can manage these entries through an authenticated API.

Changes Made
New Endpoints

• POST /api/feedback — Public endpoint allowing any participant to submit feedback without authentication
• POST /api/v2/feedbacks/send — Admin endpoint to create feedback
• GET /api/v2/feedbacks — Retrieve all feedback (admin)
• GET /api/v2/feedbacks/{id} — Retrieve a single feedback by ID (admin)
• PUT /api/v2/feedbacks/{id} — Update a feedback entry (admin)
• DELETE /api/v2/feedbacks/{id} — Delete a feedback entry (admin)

Data Models (Pydantic)

• FeedbackBase — Creation schema with the following fields: sex, age, profession, country, python_level, heard, rating (1-5), overall, favorite, improvements, comments, days (JSONB)
• FeedbackSummary — Read schema
• FeedbackUpdate — Partial update schema
• FeedbacksList — Paginated feedback list

Database

• Created the feedbacks table with automatic migration
• Columns: demographic data, Python level, rating, overall experience, strengths, improvements, comments, event days (JSONB)

Utilities

• app/utils/feedback.py — Asynchronous CRUD functions for feedback management