Elite balance tweaks

[Qwertytoforty]

What Does This PR Do

Goliath broodmother heals it's children on recall.

Broodmother trophy has a 75% to spawn tentacles vs 25%, and lava immunity doubled on use to 20 seconds.

Herald telegraphs it's shotgun attack, shoots 6 / 12 projectiles instead of 9/18

Legionnaire charge damage per hit down to 25 brute from 35 brute.

Legionnaire trophy has a 75% chance to spawn a skull vs 25%.

Pandora chaser move up to 2.5 base cooldown instead of 2 seconds.

Why It's Good For The Game

Broodmother has no way to see health of children / hurt them, might as well let recall heal them.

Brood Trophy had too low activation chance, and 10 seconds of lava immunity is nothing.

Heralds shotgun way too strong. Telegraph / less bullets will help.

Legionnaires charge hits like a truck if it multi hits. Still does, just slightly less.

Same thing with legionnare trophy, activation too low.

Pandoras chasers are INSANE under 25% hp. This is fine, but should have a slightly longer cooldown on the move because of it.

Testing

Numbers changes, but tested a bit to be sure it feels good.

Changelog

:cl: tweak: Tweaked the stats of some elites moves. Check pr for details. tweak: Broodmother trophy has 75% activation chance, and doubled lava immunity time. Legionnaire trophy has 75% activation chance. /:cl: