fix: add kubeconfig field in helm chart crd template

[JuHyung-Son]

Closes #344

📑 Description

add kubeconfig in helm template

✅ Checks

• [x] My pull request adheres to the code style of this project
• [x] My code requires changes to the documentation
• [x] I have updated the documentation as required
• [x] All the tests have passed

ℹ Additional Information