unifi-check.pl: use DB to query internal status
unifi-check.pl: move to ../raumstatus-update
raumstatus-update: add perl module boilerplate
raumstatus-update: move raumstatus_config.json
raumstatus-update: paste unifi-check into Update.pm
status-graph.sh: make source files configureble
raumstatus-update: mv status-graph.sh to scripts/render-status-graph