Add useNativeDriver experimental config

[janicduplessis]

Allow using native driver with a somewhat obscure config. As the method name suggests this is experimental and may be broken, this config will eventually be removed and native animated can be the default when it gets stable enough.

[janicduplessis]

cc @brentvatne

[neiker]

+1

This will significantly improve animations smoothness

[claytonschneider]

+1