Feature/modernize entities

[acelaya]

Closes #2034

Modernize entities to use constructor property promotion and readonly whenever possible.

[codecov]

Codecov Report

Attention: Patch coverage is 91.58879% with 9 lines in your changes are missing coverage. Please review.

Project coverage is 97.36%. Comparing base (053e026) to head (cd38732).
Report is 1 commits behind head on develop.

Files	Patch %	Lines
module/Core/src/Visit/Entity/VisitLocation.php	68.00%	8 Missing ⚠️
...dule/CLI/src/Command/Visit/LocateVisitsCommand.php	75.00%	1 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             develop    #2068      +/-   ##
=============================================
+ Coverage      97.34%   97.36%   +0.01%     
+ Complexity      1363     1349      -14     
=============================================
  Files            251      251              
  Lines           4827     4780      -47     
=============================================
- Hits            4699     4654      -45     
+ Misses           128      126       -2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.