Skip invalid keys

[Tishka17]

For some cases, like loading data from multiple sources we can simply ignore invalid keys.

That would be nice to have an option to specify that bahavior globally (or using Predicate)

Expected behabvior if unparable field found:

• For dataclasses/pydantic models, default value will be used
• For typeddict with total=False, the key will be skipped
• For mappings the key will be skipped
• For other cases it will raise an error anyway