Move query and result into classes. Add osrm args scanning. Add GPX return

Signed-off-by: Eliot Blennerhassett <Eliot@Blennerhassett.gen.nz>
Get returned route in WGS84 degrees

Signed-off-by: Eliot Blennerhassett <Eliot@Blennerhassett.gen.nz>
Use 'track' to hold the route in  a result.

Signed-off-by: Eliot Blennerhassett <Eliot@Blennerhassett.gen.nz>