Track / Configuration model doesn't map well to the game UI

The default "Group By Location" in-game actually groups by location / city. Most of the time the city is a prefix of the name of the circuit, but not always. For example under Granja Viana we have both "Copa Sao Paulo Kart Stage 2" (note the complete lack of "Granja Viana" in the track name) and "Granja Viana Kart 101". Unfortunately this means the current Track / Configuration setup we have is basically broken. By "broken" I mean that from "Copa Sao Paulo Kart Stage 2" there's no way in the game to find out that it's hidden under "Granja Viana".

My best idea is to transition to a Location / Configuration setup.

The issue describes a mismatch between the game's UI grouping by location/city and the current Track/Configuration data model. Examine the existing data structures for tracks and configurations to understand how locations are currently handled. Look for files that define these models and where they are used in the UI. The goal is to redesign the model to a Location/Configuration setup, ensuring that tracks like 'Copa Sao Paulo Kart Stage 2' can be correctly associated with their location 'Granja Viana'.

索引モデルが issue の本文から書いたものです。