[Spells] Invisibility updates and rework (#1991)

* updates pre merge

* update

* Update spell_effects.cpp

* Update mob.h

* test

* test

* updates

* updates

* save

* update

* working solid

* animal and undead start

* progress

* updates

* rename

* set invis appearance on bonus

* remove fade buff state check

* update IsViisble check

* optimizing

* don't break bots

* debug remover

* Update ruletypes.h

* perl adds

* Update client_packet.cpp

* update

* done

* remove debugs

* Update client_packet.cpp

* update

* [Spells] Invisibility updates and rework

lua support

* [Spells] Invisibility updates and rework

lua

zone/lua_mob.h

@@ -86,6 +86,10 @@ public:
 	bool IsInvisible();
 	bool IsInvisible(Lua_Mob other);
     void SetInvisible(int state);
+	uint8 GetInvisibleLevel();
+	uint8 GetInvisibleUndeadLevel();
+	void SetSeeInvisibleLevel(uint8 invisible_level);
+	void SetSeeInvisibleUndeadLevel(uint8 invisible_level);
 	bool FindBuff(int spell_id);
 	uint16 FindBuffBySlot(int slot);
 	uint32 BuffCount();
@@ -406,7 +410,7 @@ public:
 	int CanBuffStack(int spell_id, int caster_level, bool fail_if_overwrite);
 	void SetPseudoRoot(bool in);
 	uint8 SeeInvisible();
-	bool SeeInvisibleUndead();
+	uint8 SeeInvisibleUndead();
 	bool SeeHide();
 	bool SeeImprovedHide();
 	uint8 GetNimbusEffect1();