[Feature]: Results should indicate the AI provider used

[AlexsJones]

Checklist

• I've searched for similar issues and couldn't find anything matching
• 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

❯ kubectl get results -A
NAMESPACE                NAME         BACKEND               AGE
k8sgpt-operator-system   foocharlie       azureopenai           4h25m
k8sgpt-operator-system   foocharlie7445dfdcdbnvvmv  openai 10m

Adding the backend would be a really nice little convenience

Benefits

It opens up the potential to using multiple backends together

Potential Drawbacks

No response

Additional Information

No response

[TylerGillson]

Completed in #114