Add support for images

[marco-mumtak]

Description

Add support for images on RNPreventScreenshot.enableSecureView method as argument.
Supports all types of URI such as https:// or file://

Solves #34

[riamon-v]

Amazing ! Can it be merged ?

[meierrap]

Can't wait for this new feature ! Can it be merged ?

[killserver]

thx!

[riamon-v]

Here is how to use it for IOS

import LockScreenImage from 'path-to-your-image';

const setScreenshotDisabled = async () => {
  const preventScreenImage = Image.resolveAssetSource(LockScreenImage).uri;

  RNPreventScreenshot.enabled(true);
  RNPreventScreenshot.enableSecureView(preventScreenImage);
};