Summary:
This diff adds an implementation of `RCTEvent` protocol which represents touch events.
It's basically a copy of this code: https://github.com/facebook/react-native/blob/c14cc123d5be04f109ba2209a3393ee2ffa84149/React/Base/RCTTouchHandler.m#L194-L196
which is replaced using `RCTTouchEvent` in the next diff (D2884593).
public
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//This diff is part of a larger stack. For high level overview what's going on jump to D2884593.//
Reviewed By: nicklockwood
Differential Revision: D2884592
fb-gh-sync-id: e35addcf15a7012f89644200a08f5856c7f57299