feat(complexity): summarize cyclomatic complexity metrics for each CrcModel.class

[gregswindle]

User story

As an API producer and consumer,
I want to quickly assess every object's cyclomatic complexity
In order to identify objects that might require refactoring.

Acceptance criteria

• 1. CrcModel.prototype has a meta object.
• 2. CrcModel.prototype.meta has a property called complexity.
• 3. meta.complexity provides complexity metrics for every "class".