API checks: double pass, static+dynamic analysis

[pawamoy]

Is your feature request related to a problem? Please describe.
Sometimes classes/functions/methods are decorated with callables that modify them. It's always possible to write Griffe extensions to support those statically, and they're not that hard to write, but that still requires some development time, maybe even maintenancev.

Describe the solution you'd like
For quick reports on possible breaking changes, it would be nice to allow checking breakages with dynamic analysis.

Describe alternatives you've considered
If we implement a force_inspection option, users could run both static and dynamic analysis separately. Maybe that's a simpler alternative indeed.