Feature Request: Set und Get ZOOM like in cordova version

Hello,
we want that our app users are able to zoom when they are taking photos by moving an range input.
An similar Implementation like in [the cordova version](https://github.com/cordova-plugin-camera-preview/cordova-plugin-camera-preview#setzoomzoommultiplier-successcallback-errorcallback) would be enough, where we can get the Camera Zoom and set on User Input by giving an number input between 0 (No Zoom) and 100 (Full Zoom).