firmware_update: Add install failure reason

Add the install failure reason returned from dbus to the existing InstallResult metric.
Add tests for those failure reasons.

BUG=b:326094020
TEST=interactive_ui_tests --gtest_filter=*FirmwareUpdateInteractiveUi*;
     chromeos_unittests --gtest_filter=FwupdClientTest.*

Change-Id: I28015473335bf5744335e55db2128f04411264af
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/5322178
Reviewed-by: Alexei Svitkine <asvitkine@chromium.org>
Auto-Submit: Rishabh Agrawal <rishabhagr@chromium.org>
Reviewed-by: Jimmy Gong <jimmyxgong@chromium.org>
Commit-Queue: Rishabh Agrawal <rishabhagr@chromium.org>
Reviewed-by: Steven Bennetts <stevenjb@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1267151}