Refactor logger to extract counter #279
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Summary
This PR adds a middleware pattern to the logger, allowing its functionality to be extended.
Our logger has always felt like a terrific generic logging platform that doesn't exist yet in the CircuitPython community. The only issue is when we add in features that are specific to this repo like our Counter. This PR extracts the counter into a middleware which can be optionally included wherever it is wanted. Eventually this pattern could evolve further with middlewares for colorizing, writing logs to files, etc.
How was this tested