[FEATURE] Add info object

[dblock]

Is your feature request related to a problem?

Fetching server info at root doesn't return a structure.

What solution would you like?

let info: Info = client.info().send().await?.json().await?;

What alternatives have you considered?

Currently I'm doing one of these:

    let info: Value = client.info().send().await?.json().await?;
    println!("{}: {}", info["version"]["distribution"].as_str().unwrap(), info["version"]["number"].as_str().unwrap());

    #[derive(Serialize, Deserialize)]
    struct Version {
        distribution: String,
        number: String
    }

    #[derive(Serialize, Deserialize)]
    struct Info {
        version: Version
    }

    let info: Info = client.info().send().await?.json().await?;
    println!("{}: {}", info.version.distribution, info.version.number);

Is there an existing better way, otherwise I'll try to queue up a PR. Also not sure what the right way to add this is, pointers appreciated.

[Refffy]

Hey! I'll work on the issue.

[samuelorji]

@Xtansia can i pick this next ?

[samuelorji]

draft: #187 with some questions