feat(Core/Creature): Dual id Spawning WIP (#10115)

* feat(Core/Creature): Multi id Spawning WIP

* Update Creature.cpp

* Update PR

* Add Sql

* Update rev_1641837958335217980.sql

* Update src/server/game/Globals/ObjectMgr.cpp

Co-authored-by: Kitzunu <24550914+Kitzunu@users.noreply.github.com>

* Update src/server/game/Globals/ObjectMgr.cpp

Co-authored-by: Kitzunu <24550914+Kitzunu@users.noreply.github.com>

* Update rev_1641837958335217980.sql

* Update cs_npc.cpp

* Create changes_1641842959398297300.md

* Fixed issue added with random model PR

* Update GameEventMgr.cpp

Co-authored-by: Kitzunu <24550914+Kitzunu@users.noreply.github.com>

doc/changelog/pendings/changes_1641842959398297300.md

@@ -0,0 +1,16 @@
+We suggest that you always use the latest version of our master branch.
+https://github.com/azerothcore/azerothcore-wotlk/tree/master
+
+### How to upgrade
+
+For server administrators: instructions about how to upgrade existing servers are available [here](http://www.azerothcore.org/wiki/Upgrade-from-pre-2.0.0-to-latest-master).
+
+## Release notes
+
+This PR removes the modelId column from creature table to allow us to move to a dual entry spawn system.
+
+If this causes an issue for in game or custom spawns the following line of SAI can update the modelId.
+
+(#entryorguid,0,0,0,11,0,100,0,0,0,0,0,0,3,0,#modelId,0,0,0,0,1,0,0,0,0,0,0,0,0,"Creature Name - On Spawn - Change Model to #modelId"),
+
+Special thanks to @Shin @Kitzunu @M'Dic for assistance.