Provide more useful examples and label them with what they do

[jsf0]

The examples/ directory contains example config payload files but these were made in a hurry. It would be nice to have real life examples that actually do something. Some ideas:

1.) Payload file that installs, enables, and starts Nginx or Apache with a config file on a Linux server.

2.) Payload + config files that runs through the steps for configuring an OpenBSD router according to their FAQ: https://www.openbsd.org/faq/pf/example1.html

3.) Configure a Linux/BSD workstation post-install with packages and dotfiles