* Do not depend on current device screen while calculating Image Asset size.
* Scale the image asset to the exact requested size.
* Process image assets natively, pass keepAspectRatio based on the stretch property and Asset options.
* Fixed the splashscreen resource name as it cannot be read when containing a dot.
* Updated the Image Asset scale and rotate logic based on the Native one.
* Make the ImageAsset size more important than the Image decode size as its more specific.
* Fixed tslint errors.
* Added filePath support in the ImageAsset constructor for iOS in order to unify it with the Android implementation, support for relative files and file not found support errors.
* Added unit tests for ImageAssets.
* Added a sample app for UI testing of image-view with ImageAsset src.
* chore: apply PR comments
