Gauri MR

Summary by Bito

• Introduces app.java, a legacy application that demonstrates a wide range of intentional programming pitfalls.
• Adds test-gauri.py, which provides basic testing scripts.
• Overall summary: Introduces a legacy application with intentional programming pitfalls in app.java and basic testing scripts in test-gauri.py, illustrating potential issues in application logic and providing a foundation for testing improvements.