Add support for WithForeign

[caesay]

As title says, I tried to use a UDL with

[Trait, WithForeign]
interface ProgressSender {
    void send(i16 progress);
};

And got error:

Error: ExtendedAttributeNoArgs not supported: "WithForeign"

[arg0d]

Sounds like a feature from v0.0.25+, this project only supports features up to v0.0.25.