Started with async inputs to actions

app/imports/api/engine/action/functions/InputProvider.ts

@@ -4,6 +4,17 @@ type InputProvider = {
   rollDice(
     action: EngineAction, dice: { number: number, diceSize: number }[]
   ): Promise<number[][]>;
+  /**
+   * Choose from a provided selection
+   * @param action 
+   * @param choices Options to choose from
+   * @param quantity Number of choices to make [min, max] inclusive, where -1 means no limit
+   */
+  choose(
+    action: EngineAction,
+    choices: ({ _id: string } & Record<string, any>)[],
+    quantity?: [min: number, max: number],
+  ): Promise<string[]>;
 }
 
 export default InputProvider;