kusancho/governor refactoring

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• Close #246 (closed)
• Target branch: main
• Changes should be cherry-picked to 24.2: no
• Staging: https://docs.binary.picodata.io/picodata/kusancho_governor_refactoring/
• See also #201

.gitlab/merge_request_templates/default.md

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 - Close #...
-- Target branch: `%{target_branch}`
 - Changes should be cherry-picked to `24.2`: yes / no
 - Staging: https://docs.binary.picodata.io/picodata/%{source_branch}/
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