Method delete_question

ch_07/src/store.rs:117–132

(
        &self,
        question_id: i32,
    )

    }

    pub async fn delete_question(
        &self,
        question_id: i32,
    ) -> Result<bool, Error> {
        match sqlx::query("DELETE FROM questions WHERE id = $1")
            .bind(question_id)
            .execute(&self.connection)
            .await
        {
            Ok(_) => Ok(true),
            Err(e) => {
                tracing::event!(tracing::Level::ERROR, "{:?}", e);
                Err(Error::DatabaseQueryError)
            }
        }
    }

    pub async fn add_answer(
        &self,