serde-clap-deserialize

一个小型过程宏，用于将默认值添加到clap和serde。受serde-inline-default启发。

#[serde_clap_deserialize]
#[derive(Deserialize, Parser)]
struct MyArgs {
    #[serde_clap_deserialize(8)]
    foo: u32,
}

// MyArgs can now be serde-deserialized or clap-parsed
// and `foo` will have a default value of 8