Remove temp prints
Add mkdir command
New 'list' command output format for directories, links and files
Add WORK_DIR variable, implement pwd command
Add 'cd' command, show working dir in console input
Add command rmdir
'list' command now works with current directory if no argument was passed
Implement relative paths for all comamnds. Add func abs_path and pack_path
Add symlink command to create symlinks. Reformat 'list' command output.