Helper functions for handling speed conversions while using GNSS

SpeedConversionHelperFunctions.cs

        public static double DegreesToRadians(double degrees)
        {
            return degrees * Math.PI / 180.0;
        }

        public static double RadiansToDegrees(double radians)
        {
            return radians * 180.0 / Math.PI;
        }

        public static double RadiansToNauticalMiles(double radians)
        {
            // There are 60 nautical miles for each degree
            return radians * 60 * 180 / Math.PI;
        }

        public static double RadiansToMeters(double radians)
        {
            // there are 1852 meters in a nautical mile
            return 1852 * RadiansToNauticalMiles(radians);
        }