Adding new Steam Interface

Steps :-

This is an implementaion of IPlayerService interface's GetCommunityBadgeProgress method.

    public class IPlayerService : InterfaceBase 
    {
        internal IPlayerService()
        {
            Interface = "IPlayerService";
        }
        public GetCommunityBadgeProgressResponse GetCommunityBadgeProgress(ulong steamId)
        {
            SteamUrl url = new SteamUrl { Interface = Interface, Method = "GetCommunityBadgeProgress", Version = 1, AppendKey = true };
            url.Parameters.Add(new Parameter { Name = "steamid", Value = steamId.ToString(CultureInfo.InvariantCulture) });
            return GetParsedResponse<GetCommunityBadgeProgressResponse>(url);
        }
   }