Add kazhuravlev/database-gateway

[kazhuravlev]

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Summary by CodeRabbit

• Documentation
  • Updated the Database Tools section to include a new entry for a database gateway tool, which provides secure production SQL execution with ACLs, logs, and shared links.

[kazhuravlev]

NOTE: In case this is strictly critical: The repo has been maintained for less than 5 months, but I assume it will grow rapidly due to its importance to my company. Anyway - I will accept any your decision.

[kazhuravlev]

@avelino Hi! Can I do something else in order to merge this PR?

[kazhuravlev]

Could you please let me know if there’s anything more I can do to help facilitate the approval of this pull request?