creating files with '>', '>>' / reading files with '<'

[Sukori]

• [x] read from infile
  • [x] error if no file
  • [x] error if no write permission
• [x] write to outfile
  • [x] create if no file
  • [x] error if no write permission
  • [x] must overwrite the file's content
  • [x] outfile must close before the next pipe command if any
• [x] append to outfile
  • [x] create if no file
  • [x] error if no write permission
• [x] proper error handling (not with ms_error)
• [x] handle multiples redirections (> 1 > 2 > 3 || < 1 < 2 < 3 < 4)

[Sukori]

the fd is closed at the end of a loop, but not reseted to its previous value

[Sukori]

Completed