Configurable location for User Files or follow XDG on Linux

[simpoltin]

This is a general request but I play on Linux and it's a little frustrating when my home folder get clogged with hidden files and folders for every program I use. I would like to see the location for the user files be configurable or at least conform to the XDG specifications on Linux.

https://specifications.freedesktop.org/basedir-spec/basedir-spec-latest.html

To alleviate what appears to be a hard-coded location a check could be implemented that decides where to store/load the data. A plain language flow in the code block below would allow future installs to conform to XDG, allow current installs to be changed, and not breaking install for anyone that using a distro that doesn't conform to the standard.
 

If ~/.avorion exists
	use ~/.avorion
ElseIF $XDG_DATA_HOME is set
	If $XDG_DATA_HOME/avorion exists
		use $XDG_DATA_HOME/avorion
	Else
		create and use $XDG_DATA_HOME/avorion
Else
	create and use ~/.avorion
EndIF