v1 : cleaning, debug, add

patch:

1. improve liability of all command
2. add confirm gui on deleting file
3. load and save draw error message more explicit
4. clear screen is automatic
5. cleaning end file empty line in editor
6. more lighter

add:

• use dirent.h to scan directory and file

delete:

• new's command (save's command create file)
• cls's command (now automatic)
• old scanning system
• old read and write file system

help gui:

editor: