A tiny library with functions to declare status checks and register them in a centralized place.
Ensure status_lib is included in the dependencies and started by including it
in the applications key of your <application>.app{.src} file.
In your <application>_app.erl module, register a module that implements the
status_lib behaviour by calling status_lib:register(<module>).
The status_lib behaviour has a single required callback: status/0, which
should return a list of status_item(). These can be generated by calling
status_lib functions to setup checks.