Refactor strepla and Optimize Test Suite TestStrepla

[JaskRendix]

Summary of changes:

• replaced plain dictionaries with TaskInfo and CompetitorInformation dataclasses
• wrapped parsing logic in try-except blocks to catch and skip malformed lines
• used more precise type hints such as list[str], Optional and Union
• refactored get_waypoint to use dataclass fields directly
• replaced manual list appending in get_waypoints with a list comprehension
• replaced older string formatting with f-strings
• all existing logic and behavior remain intact, ensuring backward compatibility with previous usage
• reformatted code blocks and aligned indentation for better visual structure, added docstring to get_waypoint_name_lat_long for clarity
• added new tests