Add English and Chinese documentation

[Norland2]

This PR adds the English documentation to /docs and the Chinese documentation to /i18n/zh/docusaurus-plugin-content-docs/current.

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Change logs

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[TomShawn]

The PR title should reflect the document content.

[TomShawn]

Suggested change

	pg_controldata — display control information of a PostgreSQL database cluster
	pg_controldata — displays the control information of a PostgreSQL database cluster.

[TomShawn]

The product name is not correct. It should be "Apache Cloudberry".