Create an ILogger interface

[slifty]

Task

Description

Since the idea of a logger is starting to span components (countertop and appliances at this point), lets make an interface that describes exactly what methods should exist.

(This isn't about creating an actual logger class, just defining the API for documentation's sake)

Relevant Resources / Research

None

Related Issues

• Log levels #84
• Remove the default logger from IAppliance #85