feat: add k8s related files

[Ian2012]

This PR adds the necessary files to make this plugin compatible with k8s.

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[itsjeyd]

@Ian2012 Thanks for your contribution!

We'll get tests enabled for you next.

[Ian2012]

This PR is still in progress, I will let you know once we test this in a k8s cluster working with the other related plugins:

https://github.com/openedx/tutor-contrib-superset https://github.com/openedx/tutor-contrib-ralph

[Ian2012]

@itsjeyd It's ready for your review

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