[projmgr] Extend filtering when listing templates and examples

[grasci-arm]

Address #2183

When listing examples and templates, search for the --filter string over name, pack and in verbose mode also over description and boards.

[github-actions]

Test Results

    3 files     21 suites   13m 20s ⏱️
  421 tests   421 ✅ 0 💤 0 ❌
1 263 runs  1 263 ✅ 0 💤 0 ❌

Results for commit 0264b5b.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

❌ Patch coverage is 72.41379% with 8 lines in your changes missing coverage. Please review.
✅ Project coverage is 66.62%. Comparing base (5625ff6) to head (0264b5b).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
tools/projmgr/src/ProjMgrWorker.cpp	73.33%	2 Missing and 2 partials ⚠️
tools/projmgr/test/src/ProjMgrUnitTests.cpp	71.42%	0 Missing and 4 partials ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2189   +/-   ##
=======================================
  Coverage   66.62%   66.62%           
=======================================
  Files         181      181           
  Lines       38487    38514   +27     
  Branches    22567    22581   +14     
=======================================
+ Hits        25641    25661   +20     
- Misses       8081     8083    +2     
- Partials     4765     4770    +5     

Flag	Coverage Δ
projmgr-cov	80.75% <72.41%> (-0.02%)	⬇️

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

Files with missing lines	Coverage Δ
tools/projmgr/include/ProjMgrWorker.h	64.28% <ø> (ø)
tools/projmgr/src/ProjMgrWorker.cpp	87.80% <73.33%> (-0.04%)	⬇️
tools/projmgr/test/src/ProjMgrUnitTests.cpp	80.24% <71.42%> (-0.03%)	⬇️

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