Add complexity calculation for each model

[b-per]

Describe the feature

This article describes a way to evaluate models complexity by performing some regex on the models SQL code

We are already doing regex parsing today to try to identify hard coded tables, and could do it as well to evaluate models complexity.

Describe alternatives you've considered

Not doing it

Who will this benefit?

People wanting to focus refactoring efforts on the most complex models

Are you interested in contributing this feature?

Yep, why not, but also happy for anyone else to tackle it