feat(intersection): memorize last observed valid traffic light information

[soblin]

Description

intersection module keeps the last observed information of traffic light if the info got unavailable. Also I added a marker indicating which color is used inside the intersection module.

Related links

Tests performed

Initially "RED" info is available on the topic. at [00:21] and [00:25] and [00:40] "GREEN" / "YELLOW" / "RED" info is available. from [00:44] to [01:27] the info for "10277" is unavailable, but intersection module keeps the "RED" information. Then it receives "GREEN" infor again.

PR6272-2024-02-02_18.05.45.mp4

Notes for reviewers

Interface changes

none

Effects on system behavior

if a specific traffic signal information is removed from prior iteration (mainly due to out-of-range camera / out-of-range V2I), intersection module will keep using prior signal information, not "UNKNOWN"

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[codecov]

Codecov Report

Attention: 65 lines in your changes are missing coverage. Please review.

Comparison is base (cc266ea) 14.38% compared to head (9deeae0) 14.38%.
Report is 12 commits behind head on main.

Files	Patch %	Lines
...ity_intersection_module/src/scene_intersection.cpp	0.00%	30 Missing ⚠️
...ehavior_velocity_intersection_module/src/debug.cpp	0.00%	24 Missing ⚠️
...ion_module/src/scene_intersection_prepare_data.cpp	0.00%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #6272      +/-   ##
==========================================
- Coverage   14.38%   14.38%   -0.01%     
==========================================
  Files        1907     1907              
  Lines      129943   129999      +56     
  Branches    37616    37656      +40     
==========================================
  Hits        18695    18695              
- Misses      90238    90290      +52     
- Partials    21010    21014       +4     

Flag	Coverage Δ		*Carryforward flag
differential	4.63% <0.00%> (?)
total	14.39% <ø> (+<0.01%)	⬆️	Carriedforward from cc266ea

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