Initial setup for the job expression service.

[SatyamMattoo]

Basic setup for the job expression service.

Issue: #78

1. Parses the inputs from the user.
2. Generates a prompt from the inputs to be passed to the AI model for output generation.

Future goals:

• Integrate a vector database to retrieve relevant context from the documentation, enhancing the quality of the responses.

[SatyamMattoo]

Hey @josephjclark,

I hope you are doing great. This might be the initial setup you needed for the job expression generation service. Please review the code at your convenience. The prompt generation is working fine for me locally. However, I was unable to test the response generation from the AI model, as it requires an API key with a paid plan.

Best regards!