Add method ItemGenericInfoListView::isShared()

[grospelliergilles]

This method is available on accelerator.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 4 lines in your changes missing coverage. Please review.

Project coverage is 70.70%. Comparing base (d016981) to head (84d788f).
Report is 3 commits behind head on main.

✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
...e/tests/accelerator/AcceleratorItemInfoUnitTest.cc	60.00%	2 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2018      +/-   ##
==========================================
- Coverage   70.70%   70.70%   -0.01%     
==========================================
  Files        2290     2290              
  Lines      167532   167544      +12     
  Branches    19298    19300       +2     
==========================================
+ Hits       118450   118455       +5     
- Misses      42000    42003       +3     
- Partials     7082     7086       +4     

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