raidboss: r8n triggers and timeline

[Legends0]

Skipping Terrestrial Titans because it didn't look simple enough to port from savage, the mechanic uses three towers instead of two and, while entities spawn at locations and face where they will fall in normal as well, I would need to look more into the safe spot locations from patterns as it isn't clear from a quick look on if there are static spots or what the call even would say.

Could use some more digging through fflogs to find the add enrage. Right now the timeline adds an extra 60 seconds. There also wasn't a mapeffects to sync to like savage has, but perhaps there could be another method than just startsUsing.

EDIT: Enrage was added, although timings manually adjusted.

[JLGarber]

This all looked good from my testing. It would be nice to figure out a clean way to call safespots for Bare Fangs, but that's complicated and not really necessary for this PR.

There are two possible safe spots for each set of towers. Briefly, on rounds 1/3, the north tower anchors, and on round 2 the south tower does. Treating the anchor tower as relative north for each round, if the anchor is facing clockwise, toward relative southwest, the safespot is relative southeast. If the anchor is facing relative south, the safespot is relative west. I do agree that it's probably best to address that in a future PR if it's not simple to set it up given that information.

Thanks for putting all that together!