feat(lane): added validator for road shoulder (vm-01-15)

[mraditya01]

Description

This PR introduces a new validator: mapping.lane.road_shoulder. Its purpose is to validate that all road_shoulder subtype lanelets meet the VM-01-15 adjacency and boundary requirements for proper integration with road infrastructure.

Validation subjects

All road_shoulder subtype lanelets (lanelets with subtype="road_shoulder")

What is validated

This validator implements the VM-01-15 requirement and checks three conditions for road_shoulder type lanelets:

• Whether the lanelet has at least one adjacent lanelet
• If there is only one adjacent lanelet, checks whether it is a road subtype lanelet
• If there is an empty side (no adjacent lanelet), checks whether the bound linestring has a road_border type

Added files

Main files:

• road_shoulder.hpp
• road_shoulder.cpp
• road_shoulder.md

Test files:

• test_road_shoulder.cpp

Test maps:

• shoulder_road_with_non_road_adjacent.osm
  • road_shoulder_without_adjacent.osm
  • road_shoulder_empty_side_no_road_border.osm

Modified files:

• issues_info.json

Added issue codes:

• Lane.RoadShoulder-001: Road shoulder lanelet has no adjacent lanelets
• Lane.RoadShoulder-002: Road shoulder with only left/right adjacent lanelet must be adjacent to a road subtype lanelet
• Lane.RoadShoulder-003: Road shoulder with empty left/right side must have a left/right bound with road_border type

How was this PR tested?

Unit tests

Notes for reviewers

None.

Effects on system behavior

None.