K8s code executor

[questcollector]

Why are these changes needed?

Using docker container for code executor is inconvenient when utilizing autogen through a kubernetes cluster.
Code executor using Kubernetes pod can address security concerns by leveraging Kubernetes RBAC policies.

New feature

• autogen.coding.kubernetes: module
• autogen.coding.kubernetes.PodCommandLineCodeExecutor: class
• extra requires [kubernetes] for setuptools

Test cases

• test/coding/test_kubernetes_commandline_code_executor.py: test case
• test/coding/test_kubernetes_commandline_code_executor.md: test case guide

Documentation

• website/docs/topics/code-execution/kubernetes-pod-commandline-code-executor.ipynb

LICENSE

• Added Apache License 2.0 to the project because it includes the Kubernetes Python SDK, which is licensed under Apache License 2.0.

Related issue number

#2967

Checks

• I've included any doc changes needed for https://microsoft.github.io/autogen/. See https://microsoft.github.io/autogen/docs/Contribute#documentation to build and test documentation locally.
• I've added tests (if relevant) corresponding to the changes introduced in this PR.
• I've made sure all auto checks have passed.

[questcollector]

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[ekzhu]

@questcollector hey thanks for the PR! We will get back to you in a few days.

[rysweet]

This PR is against AutoGen 0.2. AutoGen 0.2 has been moved to the 0.2 branch. Please rebase your PR on the 0.2 branch or update it to work with the new AutoGen 0.4 that is now in main.

[questcollector]

This PR is against AutoGen 0.2. AutoGen 0.2 has been moved to the 0.2 branch. Please rebase your PR on the 0.2 branch or update it to work with the new AutoGen 0.4 that is now in main.

I rebased it on 0.2 branch. I'll update kubernetes pod commandline code executor to align to autogen 0.4 as new PR👌

[rysweet]

@questcollector - thanks! well done. I think there are just a couple of pre-commit checks to fix to green the CI

[jackgerrits]

we're happy to take this for 0.2, for 0.4 how do the guidelines seem to you (https://microsoft.github.io/autogen/dev/user-guide/extensions-user-guide/index.html#creating-your-own-community-extension) @questcollector ?

[questcollector]

@questcollector - thanks! well done. I think there are just a couple of pre-commit checks to fix to green the CI

oops 😅 I applied pre-commit. Thank you.
@jackgerrits 👌Thank you😊. I will make pod commandline executor by creating community extension.

[jackgerrits]

Looks like there are still CI issues here that need to be fixed before this can be merged. (I reverted a seemingly unrelated change to gitignore)

[questcollector]

Looks like there are still CI issues here that need to be fixed before this can be merged. (I reverted a seemingly unrelated change to gitignore)

Oh sorry for extra works, I fixed test code.
Code block importing kubernetes package moved into try block.
I think it will prevent issues about build actions.
Thank you for reviewing this PR