packchk: add validation for <csolution> element #2007 (#1182)

[grasci-arm]

No description provided.

[github-actions]

Test Results

  6 files   12 suites   10s ⏱️
 48 tests  48 ✅ 0 💤 0 ❌
144 runs  144 ✅ 0 💤 0 ❌

Results for commit da94ca7.

[codecov]

Codecov Report

Attention: Patch coverage is 87.36842% with 12 lines in your changes missing coverage. Please review.

Project coverage is 66.02%. Comparing base (17cd695) to head (da94ca7).
Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
tools/packchk/src/CheckFiles.cpp	89.06%	3 Missing and 4 partials ⚠️
.../packchk/test/integtests/src/PackChkIntegTests.cpp	83.87%	1 Missing and 4 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2012      +/-   ##
==========================================
+ Coverage   65.91%   66.02%   +0.10%     
==========================================
  Files         173      173              
  Lines       35851    35945      +94     
  Branches    20848    20894      +46     
==========================================
+ Hits        23631    23731     +100     
+ Misses       7902     7892      -10     
- Partials     4318     4322       +4     

Flag	Coverage Δ
packchk-cov	70.70% <87.36%> (+0.86%)	⬆️

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)
.../packchk/test/integtests/src/PackChkIntegTests.cpp	71.22% <83.87%> (+0.53%)	⬆️
tools/packchk/src/CheckFiles.cpp	74.22% <89.06%> (+2.11%)	⬆️

... and 2 files with indirect coverage changes

🚀 New features to boost your workflow:

• ❄ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.