fix(map): resolve #54 and improve mockproducer realism

[TenathDilusha]

Merge Description

Resolved #54 by fixing missing camera GPS metadata and improving mock data generation.

Changes Included

• Added latitude/longitude coordinates for camera records used by map endpoints
• Fixed /api/map/heatmap returning empty data
• Fixed /api/map/incidents returning empty data
• Expanded mock producer with 8 cameras for more realistic multi-camera traffic simulation
• Improved map rendering support for both public and control dashboards

Result

• Public live map now displays heatmap data and incident markers
• Control dashboard map now shows active pins and traffic data
• Better local/dev testing with realistic mock streams

Notes

Suggested Colombo-area coordinates were applied for existing cameras.

Closes #54

[sonarqubecloud]

Quality Gate failed

Failed conditions
C Reliability Rating on New Code (required ≥ A)

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