New devices HDS, WSR, etc

[josephedwardchang]

new devices: HDS - hydrogen sensor with alarm WSR - water softener WCR - water conditioner EHT - heat tracer

EHT_SS and EHT_SS_ALM - new canonicals for EHT FCU_RHDHS_DTM_DFSS_STM_DTC_SHM_SFVSC_ALM_SS_SRC - new canonical FCU UPS_SS_ALM - new canonical UPS

added ALM as tag for alarms in SAFETY/Abstract.yaml, ELECTRICAL/ and HVAC/
added primary_fire_alarm: # better than using fire_alarm_1 (which will lead to fire_alarm_1_23)
           ..also added secondary_fire_alarm
added apparentpower_sensor (and reactivepower_sensor) because apparent_power_sensor has error on units 
          and can't be resolved but using these new ones has no error.