doc: Missing new multi-wec aggregated status API

[gaurab-khanal]

Describe the issue

Missing new multi-wec aggregated status API. Add it as KubeStellar API in doc.

You can find it here.
https://github.com/kubestellar/kubestellar/blob/9062484ec872310e351bb578a7a257229a979239/docs/mkdocs.yml#L69

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• I would like to work on this issue.

[gaurab-khanal]

/help-wanted

[github-actions]

👋 Hello! @gaurab-khanal Welcome to the Kubestellar.

We're excited to have you here! Please make sure to check out our Contribution Guide and feel free to join our Slack channel for any questions.

[naman9271]

@gaurab-khanal recheck again if it fixed or now after my PR