feat：初始化项目

src/store/index.js

@@ -0,0 +1,11 @@
+import Vue from "vue";
+import Vuex from "vuex";
+
+Vue.use(Vuex);
+
+export default new Vuex.Store({
+  state: {},
+  mutations: {},
+  actions: {},
+  modules: {}
+});