PostgreSQL Patch Tester

Here lives an experimental bot that converts email threads that are registered in the Commitfest system into branches on Github, and collates test results from Cirrus CI.

Needs review
38/2266	Fix up partitionwise join on how equi-join conditions between the partition keys...	Richard Guo	✉ H
38/3274	Gather partial paths for subproblem's topmost scan/join rel	Richard Guo	✉ H
38/3629	Use outerPlanState macro instead of referring to lefttree	Richard Guo	✉ H
38/3235	Using each rel as both outer and inner for anti-joins	Richard Guo	✉ H

Needs review