categorize max-statements as Complexity, fix point calc
categorize max-statements as Complexity, fix point calc

* max-statements rule should go in the Complexity Category
* Calculating remediation points for rules in that category is now
  more complicated, because we have to use regexs to extract the values
* Adjusted the overage points here to match RuboCop, since we're trying
  to standardize around that for these types of checks.

codeclimate/codeclimate-eslint,derekhubbard/codeclimate-eslint,codeclimate/codeclimate-eslint,derekhubbard/codeclimate-eslint