Restructure services

apps/api/src/services/calculator.ts

@@ -1,3 +1,16 @@
-export class CalculatorService {
+import { LevelCalculator, Standards, DEFAULT_STANDARDS_DATA } from "@blade-and-brawn/calculator";
+import type { ActivityPerformance, Player } from "@blade-and-brawn/domain";
 
+export class CalculatorService {
+    private readonly levelCalculator;
+
+    constructor() {
+        this.levelCalculator = new LevelCalculator(
+            new Standards(DEFAULT_STANDARDS_DATA),
+        );
+    }
+
+    calculate(player: Player, activityPerformances: ActivityPerformance[]) {
+        return this.levelCalculator.calculate(player, activityPerformances)
+    }
 }