Add quota system files

http://novosial.org/osx/quota/index.html
https://web.archive.org/web/20150906150310/http://hints.macworld.com/article.php?story=20030808130810285
https://www.cnet.com/news/how-to-limit-user-disk-space-with-partitions-and-quotas-in-os-x/

Global/macOS.gitignore

@@ -35,3 +35,9 @@ TheVolumeSettingsFolder
 .FBCIndex
 .FBCSemaphoreFile
 .FBCLockFolder
+
+# Quota system
+.quota.group
+.quota.user
+.quota.ops.group
+.quota.ops.user