Classifier: Load and initialize classes from a given directory

This class can load and initialize classes from a given directory.

It scans a given directory and includes all files it finds.

The class takes a look at each file name and creates an object of each class obtaining the class name from the file name after removing the .php file name extension.

The created objects are stored in variables of this class with the same name of the created objects classes.

The class loads any dependent classes looking at the requires variable array of the created objects.

It also initializes all the classes it finds by calling the respective init function.