Remove old redux utilities and refactor auth pages

[charrondev]

Closes #7952

• Deletes @libary/redux/utility
• Refactors the only components using them, the shelved, feature-flagged, auth pages.
  • Now uses functional components.
  • Now use hooks.
  • Now has a single unified reducer.
  • Now uses the new action class, and FSA actions.
  • Preloads authenticator data properly.
  • Fixed error handling which was not functioning correctly.
• KB has 1 import to update as well, that can be found here https://github.com/vanilla/knowledge/pull/1452

Testing

To see the auth pages:

1. Add the following line to your config.

$Configuration['Feature']['AuthenticationAPI']['Enabled'] = true;

2. Go to /authenticate on your local site.
3. Login & password reset are the only implemented features.

[codecov]

Codecov Report

Merging #9800 into master will not change coverage.
The diff coverage is n/a.

@@             Coverage Diff             @@
##             master    #9800     +/-   ##
===========================================
  Coverage     50.77%   50.77%             
- Complexity     3670     7686   +4016     
===========================================
  Files           342      342             
  Lines         42511    42511             
===========================================
  Hits          21587    21587             
  Misses        20924    20924

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