Add shared buffer hits to pg_stat_io

When Who What
2023-03-31 02:40:13 Andres Freund (andresfreund) Closed in commitfest 2023-03 with status: Committed
2023-03-31 02:40:13 Andres Freund (andresfreund) Changed committer to andresfreund
2023-02-28 12:37:52 Bertrand Drouvot (bertranddrouvot.pg) Changed reviewers to Bertrand Drouvot (bertranddrouvot.pg)
2023-02-27 14:41:22 Melanie Plageman (melanieplageman) Changed authors to Melanie Plageman (melanieplageman)
2023-02-27 14:41:15 Melanie Plageman (melanieplageman) Attached mail thread CAAKRu_beMa9Hzih40=XPYqhDVz6tsgUGTrhZXRo=unp+szb=UA@mail.gmail.com
2023-02-27 14:41:15 Melanie Plageman (melanieplageman) Created patch record