[Admin] Extract a ui/search_panel component from orders/cart

[elia]

Summary

Extract the generic part from the orders/cart component making it reusable for the customer search.
Might not be the last iteration of the generalizing process, but so far this is what we need for the customer search, this PR is itself extracted and isolated for reviewing purposes from the work on the customer picker.

Checklist

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (main@8e9813a). Click here to learn what that means.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main    #5467   +/-   ##
=======================================
  Coverage        ?   88.98%           
=======================================
  Files           ?      620           
  Lines           ?    14892           
  Branches        ?        0           
=======================================
  Hits            ?    13251           
  Misses          ?     1641           
  Partials        ?        0           

Files	Coverage Δ
...app/components/solidus_admin/ui/badge/component.rb	100.00% <ø> (ø)
...ponents/solidus_admin/ui/search_panel/component.rb	100.00% <100.00%> (ø)
.../solidus_admin/ui/search_panel/result/component.rb	100.00% <100.00%> (ø)

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[rainerdema]

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