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/security.py

@@ -0,0 +1,39 @@
+from passlib.context import CryptContext
+from jose import JWTError, jwt
+from datetime import datetime, timedelta
+import secrets
+import string
+import bcrypt
+
+# Password hashing
+# Use a simpler CryptContext configuration to avoid bcrypt.__about__ error
+pwd_context = CryptContext(schemes=["bcrypt"])
+
+# JWT settings
+SECRET_KEY = "CHANGE_THIS_TO_A_STRONG_SECRET_KEY_IN_PRODUCTION"
+ALGORITHM = "HS256"
+ACCESS_TOKEN_EXPIRE_MINUTES = 30
+
+def verify_password(plain_password, hashed_password):
+    """Verify if the plain password matches the hashed one."""
+    return pwd_context.verify(plain_password, hashed_password)
+
+def get_password_hash(password):
+    """Hash a password for storing."""
+    return pwd_context.hash(password)
+
+def create_access_token(data: dict, expires_delta: timedelta = None):
+    """Create JWT access token."""
+    to_encode = data.copy()
+    if expires_delta:
+        expire = datetime.utcnow() + expires_delta
+    else:
+        expire = datetime.utcnow() + timedelta(minutes=ACCESS_TOKEN_EXPIRE_MINUTES)
+    to_encode.update({"exp": expire})
+    encoded_jwt = jwt.encode(to_encode, SECRET_KEY, algorithm=ALGORITHM)
+    return encoded_jwt
+
+def generate_token(length=32):
+    """Generate a random token for email verification or password reset."""
+    alphabet = string.ascii_letters + string.digits
+    return ''.join(secrets.choice(alphabet) for i in range(length))