Leverage `--use-annotated` within DMCG to aliviate mypy / cython issues.

[butler54]

Issue description / feature objectives

constr( style constrains, generated by the setup of DMCG, has issues with mypy (and pydantic). While it is not critical to fix --use-annotated provides a formulation which is acceptable to mypy.

However, there appear to be two issues.

1. (To be reported to DMCG): datetime constraints add a 'regex' which is incompatible with this formulation and must be manually removed.

2. Similar for instances of emailstr

3. It appears to have broken the setup for gen_oscal's sorting of classes

Completion Criteria