Support rename argument sdl name in async_graphql::Interface derive macro.

[al8n]

Description of the feature

When using async_graphql::Interface, there seems to be no way to define the arg name in sdl schema.

In the below example, I have an argument called where, but where is a keyword in Rust, I have to change it to another name, but I still want my users use where when querying.
e.g.

#[derive(Interface)]
#[graphql(
    field(name = "value_c", ty = "i32",
        arg(name = "where", ty = "i32")
    )
)]
enum MyInterface {
    TypeA(TypeA)
}

I would like to suggest having the below functionality.

#[derive(Interface)]
#[graphql(
    field(name = "value_c", ty = "i32",
        arg(name = "filter", graphql(name = "where"), ty = "i32")
    )
)]
enum MyInterface {
    TypeA(TypeA)
}

or

#[derive(Interface)]
#[graphql(
    field(name = "value_c", ty = "i32",
        arg(name = "filter", graphql_name = "where", ty = "i32")
    )
)]
enum MyInterface {
    TypeA(TypeA)
}

[sunli829]

You don't need to rename now and don't use name to generate the identifier. 🙂

[sunli829]

released in v6.0.7