Core/Defines: define faction templates and replace magic numbers from scripts

src/server/scripts/Spells/spell_generic.cpp

@@ -3531,7 +3531,7 @@ class spell_gen_gm_freeze : public SpellScriptLoader
                 if (Player* player = GetTarget()->ToPlayer())
                 {
                     // stop combat + make player unattackable + duel stop + stop some spells
-                    player->SetFaction(35);
+                    player->SetFaction(FACTION_FRIENDLY);
                     player->CombatStop();
                     if (player->IsNonMeleeSpellCast(true))
                         player->InterruptNonMeleeSpells(true);