Customize next value

```ts
SomeSchema.plugin(AutoIncrement, {
    id: '_id',

    // default:  counter__hooks: (next) => ++next
    counter__hooks: (next: number) => {
        if (next > 100) return next + 3;
        if (next === 1024) return 1026;
        return next + 4;
    },
});
```