fix(cursed-hr): fallback to source dir if tmp dir not working

[fkglr]

In case the tmp directory is too small (e.g. if in small RAM), decompressing large files fails.
This PR adds a fallback to creating a temporary file in the directory of the input file.

[rumpelsepp]

gallia conforms to the xdg standard. I would suggest to use $XDG_CACHE_HOME/gallia/filename for this. $XDG_CACHE_HOME falls back to ~/.cache.

This library is already a dependency. You can just use their user_cache_dir.

edit: gallia.log.PenlogReader might benefit from this change, too.