Add a ColorSpace:fromString() function to parse a string into a color space. The string can either contain the name of a well-known color space, or four color space components separate by a '/' character. Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Reviewed-by: Umang Jain <umang.jain@ideasonboard.com> Reviewed-by: Paul Elder <paul.elder@ideasonboard.com>