[packchk] no error message if ../etc/PACK.xsd not found #786 (#576)

[grasci-arm]

added:

• Schema Validation Test

changed:

• Xerxes continues checking after first error (do not treat everything as critical)
• added test cases for schema check

[codecov]

Codecov Report

Merging #946 (525631e) into main (73dda22) will increase coverage by 0.04%.
The diff coverage is 100.00%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #946      +/-   ##
==========================================
+ Coverage   53.85%   53.89%   +0.04%     
==========================================
  Files         116      116              
  Lines       22339    22339              
  Branches    12360    12359       -1     
==========================================
+ Hits        12030    12040      +10     
+ Misses       8194     8188       -6     
+ Partials     2115     2111       -4     

Flag	Coverage Δ
packchk-cov	60.97% <100.00%> (+0.36%)	⬆️
svdconv-cov	32.56% <ø> (ø)

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

Impacted Files	Coverage Δ
tools/packchk/src/CreateModel.cpp	40.84% <ø> (+1.95%)	⬆️
tools/packchk/src/PackOptions.cpp	58.73% <100.00%> (+1.81%)	⬆️

... and 2 files with indirect coverage changes

[github-actions]

Test Results

  30 files    54 suites   4s ⏱️
122 tests 122 ✔️ 0 💤 0 ❌
366 runs  366 ✔️ 0 💤 0 ❌

Results for commit 525631e.

♻️ This comment has been updated with latest results.