feat: 添加注册页面，更新路由配置和表单验证逻辑

src/views/auth/signup/index.vue

@@ -0,0 +1,35 @@
+<script lang='ts' setup>
+import { Field, Form } from "vee-validate";
+</script>
+
+<template>
+  <IonPage>
+    <IonHeader class="ion-no-border">
+      <IonToolbar class="ui-toolbar">
+        <ion-back-button slot="start" />
+      </IonToolbar>
+    </IonHeader>
+    <IonContent :fullscreen="true" class="ion-padding">
+      <div class="text-2xl font-semibold mb-5">
+        用户注册
+      </div>
+
+      <Form>
+        <Field v-slot="{ field, errorMessage }" name="email" type="email">
+          <div class="mb-4">
+            <ui-input
+              v-bind="field"
+              placeholder="请输入邮箱"
+              type="email"
+            />
+            <div v-if="errorMessage" class="text-xs text-red-500 mt-1">
+              {{ errorMessage }}
+            </div>
+          </div>
+        </Field>
+      </Form>
+    </IonContent>
+  </IonPage>
+</template>
+
+<style lang='css' scoped></style>