PR Test 1

Summary by Bito

• Introduces numerous security issues in the user application module and employee management system.
• Adds performance and logical errors to the employee management system.
• Includes an Armstrong number checker and a deliberately broken script with coding errors.
• Overall summary: Adds new Python modules including a user application module, employee management system, Armstrong number checker, deliberately broken script, and basic test file, introducing vulnerabilities, performance issues, and logical errors to simulate buggy and insecure code scenarios for testing review tools.