feat: 前端升级至vue3，后端代码结构重构，新增权限管理相关功能

mayfly_go_web/src/views/layout/footer/index.vue

@@ -0,0 +1,44 @@
+<template>
+    <div class="layout-footer mt15" v-show="isDelayFooter">
+        <div class="layout-footer-warp">
+            <div>vue-next-admin，Made by lyt with ❤️</div>
+            <div class="mt5">mayfly</div>
+        </div>
+    </div>
+</template>
+
+<script lang="ts">
+import { toRefs, reactive } from 'vue';
+import { onBeforeRouteUpdate } from 'vue-router';
+export default {
+    name: 'layoutFooter',
+    setup() {
+        const state = reactive({
+            isDelayFooter: true,
+        });
+        // 路由改变时，等主界面动画加载完毕再显示 footer
+        onBeforeRouteUpdate(() => {
+            state.isDelayFooter = false;
+            setTimeout(() => {
+                state.isDelayFooter = true;
+            }, 800);
+        });
+        return {
+            ...toRefs(state),
+        };
+    },
+};
+</script>
+
+<style scoped lang="scss">
+.layout-footer {
+    width: 100%;
+    display: flex;
+    &-warp {
+        margin: auto;
+        color: #9e9e9e;
+        text-align: center;
+        animation: logoAnimation 0.3s ease-in-out;
+    }
+}
+</style>