ci: Generate crashlogs on Windows

ci: Generate crashlogs on Windows

This configures cdb.exe to log all crashes to
"<workspace>\crashlogs\crashlog-<pid-in-hex>.txt" (as it was previously set up
for cirrus-ci based CI). The upload logs step already collects these logs.

The logic is copied from the generation of Postgres CI Windows images for
cirrus-ci [1].  Since this would be too long to include inline in pg-ci.yml,
it is implemented as 'src/tools/ci/gha_setup_windows_debugger.ps1' script.

[1] https://github.com/anarazel/pg-vm-images/blob/main/scripts/windows_install_dbg.ps1

Author: Nazir Bilal Yavuz <byavuz81@gmail.com>
Reviewed-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/CAN55FZ1BgsXSTzOpehnMa4NzWL8Aivsxx-di7-VT6bZ3j2Omow%40mail.gmail.com
Discussion: https://postgr.es/m/iggjozfshwbqpv33x5jqwtju5k5zrkyu3257dlifxkhtpg7eoq@k2ccyrdi5dtu
Backpatch-through: 19, where GHA CI was added