* Implement startDelay + fix image scale transition

This commit adds support to the startDelay option in shared element transitions on Android. It also fixes image scale transition which only animated the image's scale type, but not its bounds.

* Support declaring interpolator per element transition

Merge v5 into master

Highlights of this release
* Easier installation
* autolink and reac-native link support
* Shared Element Transition - reimplemented from scratch and new API
* [iOS] showModal animation api parity
* [Android] Animation values are now declared in dp
* [iOS] deprecate topBar.drawBehind
* [Android] RNN is migrating to Kotlin

closes #5904

Will be used for shared element transition showcase