[FEATURE]: Add generic `MapLibreEvent` and `MapEventType` models

[desmondinho]

Is your feature request related to a problem?

I was trying to add a couple of new event handlers:

• Rotate
• Pitch

public Task<Listener> OnRotate( Action<...> handler, string? layerId = null ) =>
    AddListener( "rotate", handler, layerId );

public Task<Listener> OnRotate( Func<..., Task> handler, string? layerId = null ) =>
    AddAsyncListener( "rotate", handler, layerId );

public Task<Listener> OnPitch( Action<...> handler, string? layerId = null ) =>
    AddListener( "pitch", handler, layerId );

public Task<Listener> OnPitch( Func<..., Task> handler, string? layerId = null ) =>
    AddAsyncListener( "pitch", handler, layerId );

But realized that there is no suitable event model, so I had to create my own.

Describe the solution you'd like

Would be nice to have these included in the library.

public enum MapEventType
{
    Rotate,

    Pitch
}

public class MapLibreEvent
{
    [JsonPropertyName( "type" )]
    [JsonConverter( typeof( JsonStringEnumConverter ) )]
    public required MapEventType Type { get; set; }
}

Describe alternatives you've considered

No response

MapLibre JS Reference

• MapEventType
• MapLibreEvent

Example Usage

Additional context

No response

Contribution

• I'm interested in implementing this feature with guidance