No longer dump stuff in home folder on Linux

This update to the client makes it not dump stuff in the home folder on Linux. It REQUIRES the associated launcher change as that launcher change will create the .local/share/2009scape folder. without that launcher change it will still work but the cache gets downloaded to /tmp/ . everything still works but it gets deleted after reboots on most oses.

also renamed the cache folder to cache instead of .runite_rs