[packchk] Report warning when deprecated attribute attr="copy" is used in <file> element #1371 (#1143)

[spcaipers-arm]

• [packchk] Report warning when deprecated attribute attr="copy" is used in element [packchk] Report warning when deprecated attribute attr="copy" is used in <file> element #1371

[github-actions]

Test Results

  6 files   12 suites   8s ⏱️
 43 tests  43 ✅ 0 💤 0 ❌
129 runs  129 ✅ 0 💤 0 ❌

Results for commit 1275e0f.

[codecov]

Codecov Report

Attention: Patch coverage is 78.57143% with 6 lines in your changes missing coverage. Please review.

Project coverage is 65.49%. Comparing base (edb794c) to head (1275e0f).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
.../packchk/test/integtests/src/PackChkIntegTests.cpp	68.75%	1 Missing and 4 partials ⚠️
tools/packchk/src/CheckFiles.cpp	91.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1967      +/-   ##
==========================================
+ Coverage   65.48%   65.49%   +0.01%     
==========================================
  Files         173      173              
  Lines       35133    35161      +28     
  Branches    20398    20412      +14     
==========================================
+ Hits        23006    23028      +22     
- Misses       7903     7904       +1     
- Partials     4224     4229       +5     

Flag	Coverage Δ
packchk-cov	68.48% <78.57%> (+0.07%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files with missing lines	Coverage Δ
tools/packchk/include/CheckFiles.h	100.00% <ø> (ø)
tools/packchk/src/CheckFiles.cpp	70.15% <91.66%> (+0.59%)	⬆️
.../packchk/test/integtests/src/PackChkIntegTests.cpp	69.24% <68.75%> (-0.02%)	⬇️