Subject: Add .DS_Store to .gitignore

From: Dianjin Wang <[email-masked]>
Date: Thu, 10 Apr 2025 14:04:36 +0800

Hi,

Here is a patch to add the `.DS_Store` to the .gitignore to ignore the
`.DS_Store` file tracking by git when doing some development work in
the macOS terminal. It helps me and my community (Apache Cloudberry) a
lot. I hope this small patch can help you, too.

This is my first time sending the patch to PostgreSQL. If anything
needs to be improved, please let me know. Thanks!

Best,
Dianjin Wang