First commit.
* Added: a very simple copymanager class, which is initialized with the src and dst path and which can copy over src to a folder in dst.
* Added: A progressbar class, which is given a min and max value and which can return a string representation of the percentage
* Added: A copy of shutil, obtained from the Python sources. This module was improved to let the called know the progress through a callable
* Added: a main.py file to test the script