fix: refact events to react

[DavidBertet]

Summary

Fixes #691 by refactoring how events are sent back to React.

Created an interface that is implemented differently between the old/new arch

Code is safer as it uses methods with enforced parameters, and all the piping is centralized and specific to each arch

How did you test this change?

Tested on iOS, with old arch and new arch Will send videos later today