[OOBE][QuickStart] Add final strings and icons

Adds final strings and icons for most of the QuickStart feature.

Bug: b:283502825
Change-Id: Ibbb1f402f2640badb84a8def0270844bb5b26cf6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/4545542


Commit-Queue: Renato Silva <rrsilva@google.com>
Reviewed-by: Joe Antonetti <joeantonetti@google.com>
Cr-Commit-Position: refs/heads/main@{#1147347}