Feature Request: Use of $XDG_CONFIG_HOME in configuration path

[Carus11]

As a user who needs to manage many CLI tools, I would like a consistent default pattern to where config files are sourced. The XDG base directory specification was introduced in 2003 to suggest such a consistent pattern.

For configurations it reads:

$XDG_CONFIG_HOME defines the base directory relative to which user-specific configuration files should be stored. If $XDG_CONFIG_HOME is either not set or empty, a default equal to $HOME/.config should be used.

Ideally I would like a consistent pattern across all SAS CLI based tools, which could all use the same directory such as $XDG_CONFIG_HOME/sas or $HOME/.config/sas so that config files for the sas-viya cli, the viya4-orders-cli would be grouped by the vendor or software suite.