Difficulty scaling system fixes / tweaks

Zombines are treated as slow zombies and sprint when far away, Adjusted deathray targeting, reduce emplacement spread, slightly flatten scattershot performance between engineer/normal variants, fixes.

Warning if some other addon removes your stunstick. Prevent hl2 jeeps from giving infinite ammo. Fix cooldowns visually resetting when a new player joins.

Different mainframe gen, crate materials.

Small integration.

Scaling required sweepers for nukes, prewarbridge in validmaps, better mainframe softlock prevention, APC passengers, new scoreboard, fixed mainframe generation unreliability

Lua error fixes

Sentinel changes, APC, optimisation, fixes, balance adjustments, lobby text for VIPs.

Misc Fixes, minor balance adjustments, fixed vorts using their shield charge ability when no valid targets are nearby, gave vorts an effect when their shield-charge ability is ready to use.

Fixes, low-res support, respawns shown when dead