Implement user authentication and management system with FastAPI

- Added authentication routes for login, registration, password reset, and account deletion in `auth.py`.
- Implemented user profile management, including updating user information and changing passwords.
- Created dashboard views to display user-specific information and recent activity in `dashboard.py`.
- Developed leaderboard views to show team rankings and points in `leaderboard.py`.
- Added QR code generation and redemption functionality in `qr.py` and `redeem.py`.
- Implemented team management features, allowing users to create and join teams in `teams.py`.
- Introduced session debugging utility to assist with session-related issues in `debug_session.py`.
- Configured Docker Compose for MySQL database and FastAPI application with environment variables.
- Updated requirements.txt to include necessary dependencies for the application.

app/auth.py

@@ -0,0 +1,22 @@
+#!/usr/bin/env python3
+"""
+Skeleton for authentication logic.
+Placeholder for OAuth or password-based login.
+"""
+from fastapi import APIRouter, Depends, HTTPException
+from sqlalchemy.orm import Session
+from .db import SessionLocal
+from . import models
+from passlib.context import CryptContext
+
+router = APIRouter()
+pwd_context = CryptContext(schemes=["bcrypt"], deprecated="auto")
+
+def get_db():
+    db = SessionLocal()
+    try:
+        yield db
+    finally:
+        db.close()
+
+# Add routes for login, logout, register, etc.