use dev.dirs to calculate terasology directories

[soloturn]

the library works according to the XDG standard, and offers translations for linux, macosx, windows. see for details:

https://github.com/dirs-dev/directories-jvm

so ...

❯ ls -la /home/st/.local/share/terasology/
gradle game
...
❯ ls -la /home/st/.local/share/terasology/
.rw-r--r-- 9.3k rt 12 Okt 17:56 config.cfg
drwxr-xr-x    - rt 12 Okt 17:56 configs
drwxr-xr-x    - rt 12 Okt 17:56 logs
drwxr-xr-x    - rt 12 Okt 17:56 modules
drwxr-xr-x    - rt 12 Okt 17:56 recordings
drwxr-xr-x    - rt 12 Okt 17:56 sandbox
drwxr-xr-x    - rt 12 Okt 17:56 saves
drwxr-xr-x    - rt 12 Okt 17:56 screenshots
drwxr-xr-x    - rt 12 Okt 17:56 shaders

❯ export XDG_DATA_HOME /tmp/xdg-for-test 
❯ ls -la /tmp/xdg-for-test/terasology/
.rw-r--r-- 9.3k rt 12 Okt 18:04 config.cfg
drwxr-xr-x    - rt 12 Okt 18:04 configs
drwxr-xr-x    - rt 12 Okt 18:04 logs
drwxr-xr-x    - rt 12 Okt 18:04 modules
drwxr-xr-x    - rt 12 Okt 18:04 recordings
drwxr-xr-x    - rt 12 Okt 18:04 sandbox
drwxr-xr-x    - rt 12 Okt 18:04 saves
drwxr-xr-x    - rt 12 Okt 18:04 screenshots
drwxr-xr-x    - rt 12 Okt 18:04 shaders