Add Lucene compliant regex filter expression

[djkhl]

closes #551

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.33%. Comparing base (eca9240) to head (42bf7d2).
Report is 16 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #675      +/-   ##
==========================================
+ Coverage   94.27%   94.33%   +0.06%     
==========================================
  Files         146      146              
  Lines        9777     9819      +42     
==========================================
+ Hits         9217     9263      +46     
+ Misses        560      556       -4     

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