Feature/#36

[naoki-00-ito]

This pull request adds support for displaying violation rate markers on the map, improves marker visuals based on violation data, and updates the marker and score components for better clarity and user experience. The changes include backend integration for violation rates, dynamic marker sizing and styling, and UI improvements for score display.

Map integration and marker display:

• Added a query to fetch violation rate data (/violation_rates) and display corresponding markers on the map, with dynamic sizing and additional information such as count and rate. [1] [2]
• Updated the marker component to support a new VIOLATION type, including color, label, and icon, and adjusted marker opacity for warning and violation types. [1] [2]

Marker appearance and logic:

• Marker size now dynamically increases for violation points with higher counts or rates, using a memoized calculation.
• Changed route polyline color from red to blue for improved visibility.

Score component UI:

• Updated the score component to use a dynamic text color based on status, improving readability and consistency.

Backend schema update:

• Added a name field to the warning point schema in the API specification to support marker display enhancements.