Label exclusion

Summary by Bito

• Introduces a comprehensive order processing module by adding a new file, test2.java.
• Implements a robust orderProcessor class that manages order processing, status retrieval, and notification via an embedded EmailNotifier class.
• Integrates concurrent processing.
• Overall summary: Introduces a new order processing module in test2.java, including orderProcessor and EmailNotifier classes, concurrent processing, and basic unit tests, enhancing order handling capabilities and system reliability.