Add a method to change raid total waves

[Axiumyuyu]

There is a method getTotalWaves() in Raid Interface , I want to know if there's a possible to change total waves to modify raid difficulties like adding a method like setTotalWaves() in Raid Interface

[Krakenied]

Not sure about the current state of raid mechanics however in some of the previous game versions raid entity counts have been constant (specified per entity type, per wave) which would be probably a technical limitation (there have been no equation, just an array of ints).

[granny]

I've been thinking about making raids fully configurable through the config for a while now. The code for raids is a hot mess though lol