Refactor timer class to use more type safe types

[RobinTF]

• Timer::msecs now returns std::chrono::milliseconds instead of size_t.
• Add an overload to RuntimeInfo::addDetail that takes std::chrono::milliseconds directly.
• Address some code smells and one TODO<C++20> in the code that was touched anyway.

[codecov]

Codecov Report

Attention: 13 lines in your changes are missing coverage. Please review.

Comparison is base (cf2d0b1) 81.19% compared to head (14f6ec0) 81.27%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1139      +/-   ##
==========================================
+ Coverage   81.19%   81.27%   +0.07%     
==========================================
  Files         299      301       +2     
  Lines       27746    27870     +124     
  Branches     3381     3387       +6     
==========================================
+ Hits        22529    22650     +121     
+ Misses       3830     3828       -2     
- Partials     1387     1392       +5     

Files	Coverage Δ
src/engine/ExportQueryExecutionTrees.cpp	91.32% <100.00%> (-0.02%)	⬇️
src/engine/Operation.cpp	83.21% <100.00%> (-0.13%)	⬇️
src/engine/RuntimeInformation.cpp	100.00% <100.00%> (ø)
src/engine/RuntimeInformation.h	100.00% <ø> (ø)
src/index/CompressedRelation.cpp	97.99% <100.00%> (-0.02%)	⬇️
src/index/ConstantsIndexBuilding.h	100.00% <100.00%> (ø)
src/index/IndexBuilderTypes.h	95.34% <100.00%> (+0.90%)	⬆️
src/util/Algorithm.h	98.52% <100.00%> (+0.16%)	⬆️
src/util/BackgroundStxxlSorter.h	95.55% <ø> (ø)
src/util/Serializer/ByteBufferSerializer.h	84.21% <100.00%> (+6.43%)	⬆️
... and 10 more

... and 2 files with indirect coverage changes

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[joka921]

Thank you very much, only some small suggestions remain.

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
7 Code Smells

No Coverage information
0.0% Duplication