Cobblemon Raid Dens 0.8.2+1.21.1

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Tera raid bosses now terastalise at the start of battle instead of on turn 1.
Added a new force_dynamax field to raid bosses which will force the raid boss into a permanent dynamax form.
Added a new script trigger faint:x which will trigger when a player faints, up to x times within a raid battle (or -1 for no limit).
Added a new script HEAL_0.X to heal the raid boss by X0%.
Added a new script REDUCE_TIMER_0.X to reduce the timer by X0%.
Fixed raid den clear count not correctly saving.
Fixed raid bosses spawned using /crd spawnboss not allowing multiple challengers.
Fixed raid dens consuming items when it's not supposed to.
Fixed raid dens sometimes creating new raid instances when an existing one is still ongoing.