Animation Backend init (#53526)

Summary:
This diff adds AnimatedProps class that allows prop diffs to be passed to the backend. Currently it is implemented through subclassing, but the implementation details are subject to change. To simplify integration with animation frameworks AnimatedPropsBuilder class was created - frameworks can use it to prepare their diffs.

## Changelog:

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[GENERAL] [ADDED] - AnimatedProps.h AnimatedPropsBuilder.h
[GENERAL] [CHANGED] - AnimationBackend initialisation and style updates

For more details, see:
https://reactnative.dev/contributing/changelogs-in-pull-requests

Pull Request resolved: https://github.com/facebook/react-native/pull/53526

Test Plan:
js1 fantom AnimatedBackend-itest.js
js1 fantom Animated-itest.js

Reviewed By: zeyap

Differential Revision: D81309558

Pulled By: bartlomiejbloniarz

fbshipit-source-id: 92476568b6498d7ee64203f70a17c3e578de7ac1