Add 404 page and login overlays

open-isle-cli/src/components/LoginOverlay.vue

@@ -0,0 +1,39 @@
+<template>
+  <div class="login-overlay" @click="goLogin">
+    <div class="login-overlay-text">
+      请先登录，点击跳转到登录页面
+    </div>
+  </div>
+</template>
+
+<script>
+import { useRouter } from 'vue-router'
+
+export default {
+  name: 'LoginOverlay',
+  setup() {
+    const router = useRouter()
+    const goLogin = () => {
+      router.push('/login')
+    }
+    return { goLogin }
+  }
+}
+</script>
+
+<style scoped>
+.login-overlay {
+  position: absolute;
+  top: 0;
+  left: 0;
+  right: 0;
+  bottom: 0;
+  background: rgba(255, 255, 255, 0.7);
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  text-align: center;
+  cursor: pointer;
+  z-index: 15;
+}
+</style>