feat(zx_g30_alarm): add manual triggering (sos) to alarm panel

This device predates the alarm_control_panel, and the original submission did not
include this feature so it was left out of the conversion to alarm_control_panel.

It is likely it is supported on the original ZX device as well as the Tugard with
same G30 model, but even if it isn't the addition of this feature should not cause
too many issues other than misleading the user into thinking it might work.

Issue #5902

custom_components/tuya_local/devices/zx_g30_alarm.yaml

@@ -19,6 +19,8 @@ entities:
             value: armed_away
           - dps_val: home
             value: armed_home
+          - dps_val: sos
+            value: triggered
       - id: 22
         type: integer
         name: call_looptimes