[Feature]: Add Oracle Cloud Infrastructure (OCI) Generative AI Service as a backend

[anders-swanson]

Checklist

• [X] I've searched for similar issues and couldn't find anything matching
• [X] I've discussed this feature request in the K8sGPT Slack and got positive feedback

Is this feature request related to a problem?

No

Problem Description

No response

Solution Description

Add an implementation for OCI Generative AI Service as a k8sgpt backend

Benefits

Adding the OCI Generative AI backend will provide more backend options to downstream users.

Potential Drawbacks

No response

Additional Information

No response