dual triggers on one automation aren't a thing (one trigger per row, same as music), so
this adds a second automation sharing the handler — like Auto-Deep Scan TV/Movie already
do. 'Auto-Update Video Database (Hourly)' runs the same cheap incremental server-read on
an hourly schedule, so MANUAL library additions (which Plex auto-scans) appear within the
hour instead of waiting for the weekly deep scan; the existing after-scan one still gives
instant updates for SoulSync-initiated scans.
new action_type video_update_database_hourly (seeder keys on action_type) reusing
auto_video_update_database in incremental mode; registered, seeded (schedule 1h, 15m
initial delay), UI block, label/icon, sort order. tested.