feat(app): add robot restart alert for FF changes that require restart

[mcous]

overview

Blocked by #4283, PR will be rebased when 4283 is merged Rebased and ready

This PR closes #4267 by wiring the new restart action+state from #4283 to the AdvancedSettingsCard.

Following up on what we established with buildroot, this PR also refactors robot settings into its own state subtree (robotSettings) to finally bail out of the organizational problems that have plagued the app's HTTP-fed state

changelog

• feat(app): add robot restart alert for FF changes that require restart

review requests

Requires a robot or virtual smoothie running #4290 or later

If you want to test with virtual smoothie before 4290 is merged:

1. Checkout 4290 branch
2. Start API dev server
3. Checkout this branch to run your dev app
4. To simulate a "restart", kill your server and restart it
5. After you kill your server, you're going to need to restart from step (1) to get virtual smoothie back on the "correct" branch

After 4290 is merged, there are no special considerations for testing with virtual smoothie

• Change API v2 feature flag for a robot, restart modal should pop up
• Change a different setting, restart modal should not pop up

[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (edge@bc911ad). Click here to learn what that means.
The diff coverage is 65.21%.

@@           Coverage Diff           @@
##             edge    #4285   +/-   ##
=======================================
  Coverage        ?   56.57%           
=======================================
  Files           ?      887           
  Lines           ?    25131           
  Branches        ?        0           
=======================================
  Hits            ?    14217           
  Misses          ?    10914           
  Partials        ?        0

Impacted Files	Coverage Δ
app/src/pages/Robots/RobotSettings.js	0% <ø> (ø)
app/src/robot-admin/actions.js	100% <ø> (ø)
app/src/reducer.js	0% <ø> (ø)
app/src/analytics/selectors.js	14.28% <0%> (ø)
...c/components/RobotSettings/AdvancedSettingsCard.js	0% <0%> (ø)
.../components/RobotSettings/RestartRequiredBanner.js	0% <0%> (ø)
app/src/pages/Calibrate/Labware.js	0% <0%> (ø)
app/src/robot-admin/epic.js	100% <100%> (ø)
app/src/robot-settings/actions.js	100% <100%> (ø)
app/src/robot-api/resources/settings.js	51.85% <100%> (ø)
... and 4 more

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[sfoster1]

Tested on OT2BK111111111, LGTM