Support JSON Schema 2019-09 deprecated value

### Prerequisites

- [X] I have written a descriptive issue title
- [X] I have searched existing issues to ensure the feature has not already been requested

### 🚀 Feature Proposal

Add support to deprecated values as stated in the [JSON Schema 2019-09](https://json-schema.org/draft/2019-09/json-schema-validation.html#rfc.section.9.3) paragraph.

### Motivation

Be able to deprecate properties without `raw()`.

### Example

```javascript
S.object().prop('myDeprecatedProperty', S.string()).deprecated();
```
Current workaround:
```javascript
S.object().prop('myDeprecatedProperty', S.string()).raw({ deprecated: true });
```