Typings of SelectList lead to unnecessary type casts

- `@freenow/wave` version: 1.30.0

### Relevant code

```tsx
{
console.log(option.value); // "value" does not exist on type unknown
}}
options={[1, 2, 3].map((item) => ({ label: item, value: item }))}
/>
```

### What was expected to happen?

Current behavior is to type `options` as `unknown[]`, and `option` arg in `onChange` callback as `unknown`.
It leads to unnecessary casting. Moreover, the shape of `option` is actually expected to be `{ label: string, value: string }`, the component won't work otherwise.

I would expect the option's type to extend `{ label: string, value: string }` and to be inferred from the list of provided options

### Reproduction
https://codesandbox.io/s/wave-playground-4537vt?file=/src/App.tsx