Settings up XDG_CONFIG_HOME variable as a path for input-remapper configs explicitly if found in a user environment.

[yngmjgsd]

Settings up XDG_CONFIG_HOME variable as a path for input-remapper configs explicitly if found in a user environment. A possible solution for the 'Custom config directory' #448 issue.

[sezanzeb]

If you are still considering to fix the pipeline problems: The config code has changed, there is no beta anymore and everything is on main now.