[10115] Add function to update model_info at changes to scale or model.

[newsbot]

<pre>m src/game/Creature.cpp
m src/game/GameEventMgr.cpp
m src/game/Pet.cpp
m src/game/Player.cpp
m src/game/SpellAuras.cpp
m src/game/Unit.cpp
m src/game/Unit.h
m src/shared/revision_nr.h

[10115] Add function to update model_info at changes to scale or model.

* At every change to model or scale, the related data
(bounding_radius/combat_reach) is now updated accordingly (note that player
combat_reach are not changed like creature).
* UpdateModelData is called from within SetDisplayId while changes to scale has
explicit call to UpdateModelData after new scale is set (mostly for aura scale)

* The updated values are calculated by
(scale*bounding_radius)/(scale*combat_reach)
* Database values for bounding_radius/combat_reach are expected to be relative
to scale like 1.0

Signed-off-by: NoFantasy <nofantasy@nf.no></pre>



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