Update Naxxramas scripts/sql

[sogladev]

Added scaling of Damage, Health, Armor at the bottom of naxx40_creatures.sql as I found mobs are rougly hitting 30% too much compared to vanilla

SET @DAMAGE_MULTIPLIER:= 0.69;
SET @HEALTH_MULTIPLIER:= 1.00;
SET @ARMOR_MULTIPLIER:=  1.00;

Heigan has a teleport phase that can teleport players to his tunnel

• tanks can not get teleported, players can only be teleported once per phase

Refactoring, seperate custom *cpp from acore naxx

• move custom creatures/spells/gameobjects to custom_*_40.cpp

Custom spells use new Registry macros

Codestyle passes CI

• https://github.com/azerothcore/skeleton-module/tree/master/.github/workflows

Update spell_script_names

• https://github.com/azerothcore/azerothcore-wotlk/pull/19034#discussion_r1632216149

[ZhengPeiRu21]

Thank you very much for the updates, much appreciated!