Extract typescript from marshmallow schema

Looks like there is few libraries to do so.

But it will not exactly provide what we want.

The base code of this libs is very very small. It would also be tuned.

py2ng

https://github.com/apryor6/py2ng

Nested are generated as any

typemallow

https://github.com/adenh93/typemallow

Nested are generated as ref to another type (i would prefer inner anonymous type)

List and dict are not properly supported