Implemented JakartaShopBot: Example Jakarta EE application (Milestone 1)

[jawaharbabus]

What?

This pull request introduces the initial implementation of JakartaShopBot, a simple chatbot example application for Jakarta EE. This represents Milestone 1 of the project, focusing on core functionality and communication.

Key Features:

• Developed a basic chatbot application using OpenAI API and Langchain4j
• Implemented WebSocket support for real-time, bi-directional communication
• Added instructions for building and running the example

Details:

• The chatbot takes user messages and streams responses
• WebSocket implementation enables efficient, real-time interaction
• Readme file includes the complete project scope and future milestones

Next Steps:

• Refer to the readme file for upcoming features and the full scope of the project.

How to Test:

1. Clone the repository
2. Follow the build and run instructions in the readme
3. Test the chatbot functionality and WebSocket communication

@arjantijms, Please review and provide feedback on this initial implementation. Your insights will be valuable for refining the application in subsequent milestones.