add pages for China KCS 2023: kubernetes contributor summit

[pacoxu]

• [x] the registration link will be out soon
• [x] the CFP link will be out with the registration

/cc @mengjiao-liu @kevin-wangzefeng @puja108

[pacoxu]

/assign @mrbobbytables

[mengjiao-liu]

In the next two weeks, Paco will take some time off, and I will temporarily take over his work.

[mrbobbytables]

Thanks! This looks good to go! /approve /hold /label tide/merge-method-squash

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: mengjiao-liu, mrbobbytables, pacoxu, puja108

The full list of commands accepted by this bot can be found here.

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Needs approval from an approver in each of these files: - ~~[OWNERS](https://github.com/kubernetes/contributor-site/blob/master/OWNERS)~~ [mrbobbytables] Approvers can indicate their approval by writing `/approve` in a comment Approvers can cancel approval by writing `/approve cancel` in a comment

[mrbobbytables]

The other summit page got merged first^^;; Once the _redirects file conflict has been resolved I think we should just merge this.

[mengjiao-liu]

The other summit page got merged first^^;; Once the _redirects file conflict has been resolved I think we should just merge this.

_redirects file conflict has been resolved.

[mrbobbytables]

/lgtm /hold cancel Sorry,.should have gotten to this yesterday >_<

[pacoxu]

Thanks, everyone. Good job.