Extend glic FRE related metrics

This is intended to help debug the issues we are seeing in FRE
throughput and help investigate sources of errors in the FRE.

Added Metrics:
* UserAction metric for closing the fre panel in each different state.
* UserAction for users clicking ‘Try Again’ in the error panel.
* UserAction for the FRE loading successfully.
* Histogram of reasons for when FRE is closed by synchronous widget close function.
* Histogram of why the error state was entered.
* Histogram of elapsed time between FRE completion and first submitted input.

NO_IFTTT="New enum."

Bug: b:427261741
Change-Id: I695311f8971c4180ab738432e01901dcce5cc062
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6669255
Commit-Queue: Nick Birnie <birnie@google.com>
Reviewed-by: Alex Gough <ajgo@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1481313}