feat(auth): implement login security features including account locking and login attempt tracking

.env.example

@@ -25,6 +25,11 @@ GOOGLE_REDIRECT_URI=http://localhost/auth/google/callback
 
 
 BCRYPT_ROUNDS=12
+AUTH_MAX_LOGIN_ATTEMPTS=5
+AUTH_LOGIN_ATTEMPT_WINDOW_MINUTES=30
+AUTH_LOGIN_LOCK_MINUTES=15
+AUTH_LOGIN_RATE_LIMIT_PER_MINUTE=10
+AUTH_LOGIN_IP_RATE_LIMIT_PER_MINUTE=30
 
 LOG_CHANNEL=stack
 LOG_STACK=single