[Admin] Extract #move action into concern

[chaimann]

Note

Split from #6236

Summary

DRYing up controllers that reuse sorting functionality, moving #move action and related code into Moveable concern

Checklist

Check out our PR guidelines for more details.

The following are mandatory for all PRs:

• I agree that my PR will be published under the same license as Solidus.
• I have written a thorough PR description.
• I have kept my commits small and atomic.
• I have used clear, explanatory commit messages.

[codecov]

Codecov Report

Attention: Patch coverage is 94.44444% with 1 line in your changes missing coverage. Please review.

Project coverage is 88.94%. Comparing base (e6a57c3) to head (c057d37).
Report is 8 commits behind head on main.

Files with missing lines	Patch %	Lines
...app/controllers/concerns/solidus_admin/moveable.rb	93.33%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6282      +/-   ##
==========================================
+ Coverage   88.87%   88.94%   +0.07%     
==========================================
  Files         858      859       +1     
  Lines       18413    18404       -9     
==========================================
+ Hits        16364    16369       +5     
+ Misses       2049     2035      -14     

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[tvdeyen]

Amazing! Thanks 🙏🏻