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?

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• Bug fix (non-breaking change which fixes an issue)
• 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

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• 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!