allow image to set preferred engine to show on top and fix getting engines fail

[AIIX]

• fixes https://github.com/OpenVoiceOS/skill-ovos-setup/issues/49
• allows images to set preferred engines to show on top of the list

[JarbasAl]

please bump minimum OPM version in requirements.txt, other than that looks good

[AIIX]

please bump minimum OPM version in requirements.txt, other than that looks good

its already at 0.0.19a8 latest