feat: some stats

src/stores/compare.ts

@@ -0,0 +1,19 @@
+import { produce } from 'immer';
+import { create } from 'zustand';
+import { DuelMember } from './duel';
+
+export interface CompareMember extends DuelMember {
+  crewSkills: Record<string, number>;
+}
+
+export interface Compare {
+  tanks: CompareMember[];
+}
+
+export const useCompare = create<Compare>()(() => ({
+  tanks: [],
+}));
+
+export default function mutateCompare(recipe: (draft: Compare) => void) {
+  useCompare.setState(produce(recipe));
+}