feat(openapi): added example value support for param/schema

[chirag-droid]

Example Code

struct Api;

fn hello_world() -> String { String::from("Hello World") }

#[OpenApi]
impl Api {
    #[oai(path = "/", method = "get")]
    async fn get(
        &self,
        #[oai(example = "hello_world")] name: Query<String>,
    ) -> PlainText(String) {
        PlainText(name.0)
    }
}

[chirag-droid]

I have also added test for it in poem-openapi/tests/operation_param.rs

[attila-lin]

fmt failed~

[chirag-droid]

let me fix it. there should be a git pre commit hook for this. that just checks the format.

[sunli829]

thanks! 🙂