Add a blog post for contributor summit in shanghai

[windsonsea]

By following suggestions in kubernetes/website#42999, add a blog for 2023 Kubernetes Contributor Summit in Shanghai.

cc @sftim

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[sftim]

/close

We didn't have capacity to get this published.

[k8s-ci-robot]

@sftim: Closed this PR.

In response to [this](https://github.com/kubernetes/contributor-site/pull/434#issuecomment-1732674673): >/close > >We didn't have capacity to get this published. Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[pacoxu]

Not sure if we can post a blog for the contributor summit content.

[mrbobbytables]

If you want to post a summary blog of it, that'd be fine 👍

[pacoxu]

If you want to post a summary blog of it, that'd be fine 👍

Thanks. I will work on that after China's National Day holiday with @windsonsea.