[7776] Completed implementation of CMSG_SPELLCLICK

For vehicles, you have to add the correct SPELL_AURA_CONTROL_VEHICLE spells to
npc_spellclick_spells, otherwise you won't be able to use them

src/game/World.cpp

@@ -1198,6 +1198,9 @@ void World::SetInitialWorldSettings()
     sLog.outString( ">>> Quests Relations loaded" );
     sLog.outString();
 
+    sLog.outString( "Loading UNIT_NPC_FLAG_SPELLCLICK Data..." );
+    objmgr.LoadNPCSpellClickSpells();
+
     sLog.outString( "Loading SpellArea Data..." );          // must be after quest load
     spellmgr.LoadSpellAreas();