Key config in Ron file format. This is written to $XDG_CONFIG_HOME/gitui/key_config.ron.
path or strings concatenated with "\n"
""
'' exit: Some(( code: Char('c'), modifiers: ( bits: 2,),)), quit: Some(( code: Char('q'), modifiers: ( bits: 0,),)), exit_popup: Some(( code: Esc, modifiers: ( bits: 0,),)), ''