Summary:
V1 ios diagnostics complete.
This change adds a new section to the ios diagnostics screen that shows the current state of each step required to get sonar working.
The logs (transitions between states) are displayed below it.
SonarClient.mm is technically involved in the UI, by converting enums to emojis, I don't like this
but didn't get obj-C working with C enums so have left it like this for now.
Reviewed By: priteshrnandgaonkar
Differential Revision: D9378212
fbshipit-source-id: 091ce00e898a8038c680555123640b90d753fc09
f99ef6996e