releases: add tidb 4.0.16 release notes

[shichun-0415]

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What is changed, added or deleted? (Required)

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For details, see tips for choosing the affected versions (in Chinese).

• master (the latest development version)
• v5.3 (TiDB 5.3 versions)
• v5.2 (TiDB 5.2 versions)
• v5.1 (TiDB 5.1 versions)
• v5.0 (TiDB 5.0 versions)
• v4.0 (TiDB 4.0 versions)
• v3.1 (TiDB 3.1 versions)
• v3.0 (TiDB 3.0 versions)
• v2.1 (TiDB 2.1 versions)

What is the related PR or file link(s)?

• This PR is translated from: releases: add tidb 4.0.16 release notes docs#7119
• Other reference link(s):

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• Delete files
• Change aliases
• Need modification after applied to another branch
• Might cause conflicts after applied to another branch

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• qiancai
• tiancaiamao

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[ti-chi-bot]

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[qiancai]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: be83914

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #8014.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #8015.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #8016.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #8017.

[ti-chi-bot]

In response to a cherrypick label: new pull request created: #8018.