feat: Add an internal option to the extract command

[theofidry]

Introduce the option --internal to the extract command. There is a number of changes with the introduction of this option:

• Instead of basing the default value to the question of whether the target dir should be deleted or not, it is now done based in this flag
• When this flag is passed, the error thrown when creating the PHAR is swallowed and its message written to the STDERR. This will allow to retrieve it in Pharaoh when executing it without having the whole stack trace.