valitron 0.4.0

# Valitron is an ergonomics, functional and configurable validation

In the future, modularization will be supported

Inspired by axum

## Features

- Ergonomics validation
- Build-in rule, e.g. Required, StartWith ...
- Closure validate
- Related validate, e.g. password confirm
- Custom rule with other parameter
- Check / modify input data
- Custom error message type
- Support different error types convert, it can use both build-in rules and custom error type simultaneously
- Collect validate error messages
- Support all types data on `#[derive(Serialize, Deserialize)]` ( visit [`serde`](https://serde.rs/) for more info)

## Examples

```rust
fn main() {
    let validator = Validator::new()
        .rule("name", Required.and(StartWith("hello")))
        .rule("age", custom(age_limit))
        .message([
            ("name.required", "name is required"),
            ("name.start_with", "name should be starts with `hello`"),
        ]);

    let person = Person {
        name: "li",
        age: 18,
    };

    let res = validator.validate(person);
    // or using trait
    let res = person.validate(validator);
}

fn age_limit(n: &mut u8) -> Result<(), Message> {
    if *n >= 25 && *n <= 45 {
        return Ok(());
    }
    Err("age should be between 25 and 45".into())
}
```

#### License

<sup>
Licensed under either of <a href="LICENSE-APACHE">Apache License, Version
2.0</a> or <a href="LICENSE-MIT">MIT license</a> at your option.
</sup>

<br>

<sub>
Unless you explicitly state otherwise, any contribution intentionally submitted
for inclusion in this crate by you, as defined in the Apache-2.0 license, shall
be dual licensed as above, without any additional terms or conditions.
</sub>

## Other

My English proficiency is limited. If you have a better representation in the document, welcome to PR.