[native] [2/n] add pref boilerplate for redux

Summary: Add boilerplate, more or less copy-pasta'ed from relationship-list.react.js

Test Plan: default notifications should still render, no new functionality yet, just breaking up diffs.

Reviewers: atul, palys-swm, ashoat

Reviewed By: ashoat

Subscribers: Adrian, karol-bisztyga, boristopalov

Differential Revision: https://phabricator.ashoat.com/D2333