Add support for alarm checking on other than the default FTD
The alarm blocks have an FTD field which can be used to specify an FTD for the alarm scan for the device. Currently this is implemented in Mooc, but not in the Acsys FE Framework.
Use the FTD to launch the alarm check for each device when it is specified instead of the default alarm scan frequency.
Implementation appears to be limited to the alarms.erl file, centering on the alarm_spawner function.