Methods for handling duplicates

[Abelarm]

Issue: #1

Comment on the PR

First was added the argument parse, with first argument the path and second --duplicates, optional (default value skip) The argument duplicates have 4 choices: [skip, over, pref, suff]

• skip: skip the duplicated file
• over: overwrite the duplicated file
• pref: add a prefix to the duplicated file
• suff: add a suffix to the duplicated file

The way this is handled is with a dictionary where the keys are the 4 choices and the value are the functions that implement that behaviour.

In this way should be easy to change the strings or the expected behaviour.

Improvement

The only part I don't really like is the global variable count_int that is used for adding the right prefix/suffix. That can be improved

[Abelarm]

here you are!

I hope everything is fine.