Model names: real NPC names for 462 models named after their file

User asked to check names against online databases. tools/data/wotlk_creatures.tsv (made by the model porting tool's namecheck from AzerothCore's 3.3.5 creature_template/creature_template_model on GitHub and Retail's Creature table on wago.tools; helper creatures left out) names displays Models.lua would name after the model file: stock displays always, OctoWoW-added ones only when the model file matches (HD remakes count). build_models.ps1 uses it after Turtle's names. Creature names that are already NPC names are left as they are (a display shared by several NPCs isn't wrong).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: bdot89