Probably not super important because these functions are symmetric with `Math.cos` and `Math.sin` but I thought maybe some people might find it useful.
## Motivation
I found it pretty fancy to write `nativeEvent` (or some field of `nativeEvent`) as a function which is evaluating on each event's frame.
## Changes
Because it must be done fully natively I do not relate `nativeEvent` function with any View but use list of `AlwaysNodes` instead, which may seems to be similar to `Animated.Code` and behave conceptually in the same way.
On executing code it performs "evalution" which fill required (by function) fields of `nativeEvent` by `Animated.Value`s and connect it to `AlwaysNode`. I decided to use `Proxy` to manage it, but it is not supported currently by Android because of anscient version of JSC, which is going to be replaced soon (kindly ping @pmlocek), so I have done some kind of case-specic polyfill.
merge firstly: https://github.com/kmagiera/react-native-gesture-handler/pull/287
If there's expo used or debugger enabled RNR's `debug` node is supposed to show messages in console/terminal.
RNR should should logs only in `__DEV__` mode
## Motivation
Logic of evaluation was strictly connected with views but it should not be like because some logic could be abstracted from views
## Changes
Add `Animated.Code` which behaves like view, but indeed is not related to any layout.
This PR adds new "round" and "color" nodes.
Color nodes can be used to map to color props in view (e.g. backgroundColor)
Round is required for the color math to function properly (each color component needs to be an integer).
Added demo app where you can pan view around that changes color depending on the position on HSV palette.
