[Feature] 1766 - Group Attack (#1770)

* Implemented group attack logic

* Updated all minions in the SRD to use the group attack functionality

* .

* Renamed groupAttack.nr to groupAttack.numAttackers

* Moved the flag vs global setting logic to documents/scene

* .

module/data/chat-message/actorRoll.mjs

@@ -48,6 +48,7 @@ export default class DHActorRoll extends foundry.abstract.TypeDataModel {
                 action: new fields.StringField()
             }),
             damage: new fields.ObjectField(),
+            damageOptions: new fields.ObjectField(),
             costs: new fields.ArrayField(new fields.ObjectField()),
             successConsumed: new fields.BooleanField({ initial: false })
         };