feat: add chart name and overrides to airflow.fullname helper function

[ffais]

What does your PR do?

This PR makes the following changes...

Added the Chart name as a suffix to the airflow.fullname function, this is very useful for recognizing the resources deployed by airflow chart when is a sub chart.

Added nameOverride and fullnameOverride to allow the user to customize resource suffixes.

Checklist

For all Pull Requests

• Commits are signed off
• Commits have semantic messages
• Documentation updated
• Passes ct linting

For releasing ONLY

• Chart.yaml version bumped
• CHANGELOG.md updated

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