Add Buff infrastructure to go through different logic paths from different patches (#5073)

common/patches/rof2_ops.h

@@ -43,8 +43,7 @@ E(OP_BazaarSearch)
 E(OP_BecomeTrader)
 E(OP_BeginCast)
 E(OP_BlockedBuffs)
-E(OP_Buff)
-E(OP_BuffCreate)
+E(OP_BuffDefinition)
 E(OP_BuyerItems)
 E(OP_CancelTrade)
 E(OP_CastSpell)
@@ -100,7 +99,6 @@ E(OP_MoveItem)
 E(OP_NewSpawn)
 E(OP_NewZone)
 E(OP_OnLevelMessage)
-E(OP_PetBuffWindow)
 E(OP_PlayerProfile)
 E(OP_RaidJoin)
 E(OP_RaidUpdate)
@@ -123,7 +121,6 @@ E(OP_SpawnAppearance)
 E(OP_SpawnDoor)
 E(OP_SpecialMesg)
 E(OP_Stun)
-E(OP_TargetBuffs)
 E(OP_TaskDescription)
 E(OP_TaskHistoryReply)
 E(OP_Track)
@@ -153,7 +150,7 @@ D(OP_Barter)
 D(OP_BazaarSearch)
 D(OP_BlockedBuffs)
 D(OP_BookButton)
-D(OP_Buff)
+D(OP_BuffDefinition)
 D(OP_BuffRemoveRequest)
 D(OP_BuyerItems)
 D(OP_CastSpell)