FreeRADIUS sample config files

Took care of organizing the configuration files for freeradius 1 and added ready-to-use config files for freeradius 2 as well.

Take a look into contrib/configs/ and you’ll see the freeradius versions categroized into directories, inside you should find a directory listing with possible configurations, since we currently have just one version of it then that should be cfg1/ and inside that the freeradius/ or raddb/ directories as appropriate for freeradius 1 and 2.