docs: add documentation to models

namespace GarrigueGamesLauncher.Models;

/// <summary>

/// Represents a game in the launcher, including metadata such as IDs, name, paths,

/// authors, description, images, and genre tags.

/// </summary>

public record Game

{

    public required string GameId { get; set; }

namespace GarrigueGamesLauncher.Models;

/// <summary>

/// Represents the data structure used for storing and transferring game information.

/// This DTO is used for serialization/deserialization from <c>data.json</c> files in the

/// game directories.

/// </summary>

public record GameDto

{

    [Required]

namespace GarrigueGamesLauncher.Models;

/// <summary>

/// Represents basic usage statistics for a game.

/// This model is typically retrieved from the database and not directly serialized

/// by the launcher.

/// </summary>

public record GameStatsDto

{

    public required int PlayCount { get; set; }

namespace GarrigueGamesLauncher.Models;

/// <summary>

/// Represents a lightweight reference to a game retrieved from the database.

/// Can be used to load additional information about the game from the provided directory.

/// </summary>

public record GameStubDto

{

    public required string GameId { get; set; }

using Pivo.Client;

using GarrigueGamesLauncher.Controls;

namespace GarrigueGamesLauncher.Models;

/// <summary>

/// Represents a checkbox for selecting a genre tag in the <see cref="CheckboxDropdown" /> control.

/// </summary>

public record GenreTagCheckboxItem {

    public bool IsChecked { get; set; }

    public required GameTagItem Tag { get; set; }