feat: serde plugin support attributes

[Millione]

Motivation

struct A {
    1: required string a(pilota.serde_attribute = "#[serde(rename = \"AA\")]"),
    2: required i32 b,
}(pilota.serde_attribute = "#[serde(rename_all = \"camelCase\")]")

Generated:

#[derive(
    :: serde :: Serialize,
    :: serde :: Deserialize,
)]
#[serde(rename_all = "camelCase")]
pub struct A {
    #[serde(rename = "AA")]
    pub a: ::pilota::FastStr,
    pub b: i32,
}