rssql 0.2.6

Struct free Rust SQL tool.
Documentation
The async struct free SQL toolkit for Rust.

## Simple example

```rust
use rssql::PostgreSQL;

async fn test_postgresql() {
    let url = "postgre://user:password@docker:15432/test";
    let mut postgresql = PostgreSQL::connect(url).await.unwrap();
    let check = postgresql.check_connection().await;
    assert_eq!(check, true);
    let rets = postgresql.execute("SELECT * FROM info").await.unwrap();
    println!("{}", rets);
    postgresql.close().await;
}
```

**Output**
```bash
+----+-------+------------+
| id | name  |    date    |
+----+-------+------------+
| 1  | test1 | 2023-06-11 |
| 2  | test2 | 2023-06-11 |
+----+-------+------------+
```