feat(projects): 添加固定路由

src/views/system/exception/403.vue

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+<template>
+  <div>403</div>
+</template>
+
+<script lang="ts" setup></script>
+<style scoped></style>

src/views/system/exception/404.vue

@@ -0,0 +1,6 @@
+<template>
+  <div>404</div>
+</template>
+
+<script lang="ts" setup></script>
+<style scoped></style>

src/views/system/exception/500.vue

@@ -0,0 +1,6 @@
+<template>
+  <div>500</div>
+</template>
+
+<script lang="ts" setup></script>
+<style scoped></style>

src/views/system/login/index.vue

@@ -0,0 +1,6 @@
+<template>
+  <div>登陆页</div>
+</template>
+
+<script lang="ts" setup></script>
+<style scoped></style>