Get Kamland pre-supernova alerts into gracedb

Quoting Joe Giaime: "On Friday there was a KamLAND pre-supernova alert, with sigma > 3. LSC members at both LLO and LHO (together with Virgo) cut short commissioning and cajoled the detectors into observation mode at decent sensitivity until KamLAND revised the number down below the action level, staffed overnight by volunteers. It was very exciting! (see https://ldas-jobs.ligo.caltech.edu/~kats/KamLAND-watch/alert.html )"

Also from James Lough: " am also interested in this for GEO. We have an alert monitor set up that looks at GraceDB. It’s based on one that I think is running at LIGO. But, I don’t see this alert in GraceDB. I think it would be straightforward for someone to pipe the KamLAND alerts into GraceDB. There are SNEWS alerts in GraceDB, but I noticed that the latest test alert didn’t seem to make it in ...."

We should also follow up with the burst group on how RAVEN should respond to these and other possible supernova alerts.