Modal "animationType"

## 🚀 Feature Proposal

The normal react-native "Modal" component has an "animationType" feature, that lets you set an animation for the modal transition, but I've noticed that UI-Kitten doesn't support the feature. I personally would love to see it be added, and if think many others would too :)

## Motivation

This animation feature will allow making more smooth modal transitions, and therefore give the user a better experience

## Example

For example you can use the "Modal" from react-native to see how it normally operates:
`import { Modal } from "react-native"`
`...`

See this documentation link for more information: https://reactnative.dev/docs/modal#animationtype