Allow base validation functions to receive context information

[smarie]

This is a requirement from field() in mixture: indeed the validation function signature can accept (obj, field, val). https://github.com/smarie/python-mixture/issues/2

[smarie]

In we go in that direction, we should probably have the type hints be generics parametrized with the possible signatures of validation functions.

[smarie]

Best and most instuitive would be to simply pass the **kw_context_args to the validation functions. The failure raiser creator would create the appropriate wrapper according to the functions' signature.