Set nextStreetId as Agent class attribute

[Grufoony]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 90.48%. Comparing base (248ae5f) to head (aac4dda).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #261   +/-   ##
=======================================
  Coverage   90.48%   90.48%           
=======================================
  Files          37       37           
  Lines        4895     4898    +3     
  Branches      457      457           
=======================================
+ Hits         4429     4432    +3     
  Misses        466      466           

Flag	Coverage Δ
unittests	90.48% <100.00%> (+<0.01%)	⬆️

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