Add Study group 08 classes
Add custom controller resolver to add controllers as services
Updated front controller to load the DI container from a configuration file. The config will contain all the classes necessary to create the framework class.
Update composer dependencies
Update framework to use the ContainerAwareHttpKernel. This will take care of dispatching all the events. Event names must be updated.
Routes load controller for hello_lang route from the service container.
Adding core services to  create the framework object.
Updates to front controller