View components: admin menus

[denny]

Adding View Components, and using them to replace all of the partials previously involved in generating the main menu in the admin area sidebar.

[codecov]

Codecov Report

Merging #1096 (3317579) into main (4f90075) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              main     #1096    +/-   ##
==========================================
  Coverage   100.00%   100.00%            
==========================================
  Files          361       381    +20     
  Lines         5208      5348   +140     
==========================================
+ Hits          5208      5348   +140     

Impacted Files	Coverage Δ
...nents/shiny_access/admin/menu/section_component.rb	100.00% <100.00%> (ø)
...ponents/shiny_blog/admin/menu/section_component.rb	100.00% <100.00%> (ø)
.../shinycms/admin/menu/consent_versions_component.rb	100.00% <100.00%> (ø)
...ponents/shinycms/admin/menu/coverband_component.rb	100.00% <100.00%> (ø)
.../components/shinycms/admin/menu/email_component.rb	100.00% <100.00%> (ø)
...p/components/shinycms/admin/menu/item_component.rb	100.00% <100.00%> (ø)
.../components/shinycms/admin/menu/other_component.rb	100.00% <100.00%> (ø)
...omponents/shinycms/admin/menu/section_component.rb	100.00% <100.00%> (ø)
...mponents/shinycms/admin/menu/settings_component.rb	100.00% <100.00%> (ø)
...omponents/shinycms/admin/menu/sidekiq_component.rb	100.00% <100.00%> (ø)
... and 38 more

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