enhancement: Daskgateway deployment with Helm charts/kustomize

[Helion55]

About this PR

Inital commit for daskgateway installation with Helm charts, instead of Terraform resources. Created a directory named "kubernetes_daskgateway", replaced the needful from kubernetes_kuberhealthy and modified the files, "kustomization.yaml.tmpl", "values.yaml" and init.py.

Reference Issues or PRs

Fixes #2991

What does this implement/fix?

Put a x in the boxes that apply

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds a feature)
• [ ] Breaking change (fix or feature that would cause existing features not to work as expected)
• [ ] Documentation Update
• [ ] Code style update (formatting, renaming)
• [ ] Refactoring (no functional changes, no API changes)
• [ ] Build related changes
• [ ] Other (please describe):

Documentation

• [ ] For new features or enhancements, a corresponding PR has been opened in the documentation repository (if applicable)
  • Link to docs PR:

Testing

• [ ] Did you test the pull request locally?
• [ ] Did you add new tests?

How to test this PR?

Any other comments?

[dcmcand]

@Helion55 please open an issue describing what you are trying to solve in this PR and reference it here. Thanks!