[GENERAL] initdb with ignore hidden option

Hi Postgres team,

                Our organization would like to make a feature request to ignore hidden files/directories when running an initdb. We use hidden directories for misc backup strategies, and it’s cumbersome when needing to coordinate with our storage administrator when we are re-using an existing directory for an initdb.

Options such as these would be helpful:

-ignore-existing

-ignore-dot-files

-ignore=(file/directory name)

Thanks

MF