[Feature]: add nodeSelector to operator

[tozastation]

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

1. Helm Chart in k8sgpt-operator
   -> add NodeSelector to template deployment.yaml
2. k8sgpt-operator
   -> add NodeSelector param to K8sGPTSpec
   -> support NodeSelector for the GetDeployment function

Benefits

user can run 'k8sgpt-operator' and 'k8sgpt-deployment' on specific nodes

Potential Drawbacks

No response

Additional Information

If it looks good, I will try to make a PR on my end.

[tozastation]

@AlexsJones

thank you for looking
Is it okay for me to try implementing the issue on my end?
If it's alright, I would like you to assign it to me...!