Deserialization does not support newtypes

[sjunepark]

Issue corresponding to a PR #1779. (Relevant tests are included in the PR)
In the current version, newtype fields aren't able to be deserialized as seen below.

#[cfg(feature = "serde")]
#[tokio::test]
async fn deserialize_row() {

// ... ommitted

    #[derive(Deserialize, Debug)]
    struct Data {
        id: i64,
        name: String,
        score: f64,
        data: Vec<u8>,
        age: Option<i64>,
        none: Option<()>,
        status: Status,
        wrapper: Wrapper,
        newtype: NewType,
    }

    #[derive(Deserialize, Debug, PartialEq)]
    struct NewType(String);

// ... ommitted

    let data: Data = libsql::de::from_row(&row).unwrap();

// ... ommitted

    // Fails !!!
    assert_eq!(data.newtype, NewType("Newtype".to_string())); 
}