FR: add support for LocationMode

[peda]

Alarm Mode is only supported if you do have any Ring alarm devices, but if someone is only using Ring cameras and doesn't have a ring alarm system, then setting the alarm mode will fail with the error message Could not find a security panel for location (see dgreif/ring#533)

In this case setLocationMode should be used instead - as the API for setAlarmMode is very similar, it should be a rather simple task to add support for setLocationMode

[realSixi]

Hi @peda
Thanks for your feedback. I just releases a new version that uses setLocationMode as a fallback. Due i have no setup with only cameras, can you test if it works? :)

Thanks in advance!