Add geodetic2ecef function.

[nhz2]

Also updating catch2 so the tests compile on desktop.

Using the algorithm from https://geographiclib.sourceforge.io/

/** Return the position in International Terrestrial Reference System coordinates, units meters.
Using the WGS 84 ellipsoid and the algorithm from https://geographiclib.sourceforge.io/
 INPUT:
    lat: Geodetic latitude in degrees, -90 at the south pole, 90 at the north pole.
    lon: Geodetic longitude in degrees.
    h: Height above the WGS 84 ellipsoid in meters.
**/
inline Vector geodetic2ecef(float lat, float lon, float h)