style(app): 使用 NuxtImg 替代 img 标签

在多个组件中将 `img` 标签替换为 `NuxtImg` 标签，提升图片加载的性能和优化。例如，在 `AboutSection.vue`、`FriendsSection.vue`、`HeroSection.vue`、`ProjectsSection.vue`、`SitesSection.vue` 和 `SkillsSection.vue` 中的图片标签。

refactor(app): 扩展 `nuxt.config.ts` 配置

扩展了 `nuxt.config.ts` 配置文件中的模块配置，添加了 `@nuxt/image` 和 `@nuxt/eslint` 模块。同时，优化了 `routeRules` 配置，以支持预渲染和增量静态生成。

app/components/HeroSection.vue

@@ -2,10 +2,14 @@
     <section class="card grid grid-cols-[120px_1fr] gap-4 items-center hover:shadow-lg-dark group">
         <div class="relative">
             <div
-                class="absolute inset-0 rounded-full bg-gradient-to-br from-primary/30 to-accent/20 blur-xl group-hover:blur-2xl transition-all duration-300 opacity-0 group-hover:opacity-100">
-            </div>
-            <img class="relative w-30 h-30 rounded-full object-cover border-2 border-primary/40 shadow-md-dark bg-white transition-transform duration-300 group-hover:scale-105"
-                :src="profile.avatar" alt="avatar" loading="lazy" />
+                class="absolute inset-0 rounded-full bg-gradient-to-br from-primary/30 to-accent/20 blur-xl group-hover:blur-2xl transition-all duration-300 opacity-0 group-hover:opacity-100"
+            />
+            <NuxtImg
+                class="relative w-30 h-30 rounded-full object-cover border-2 border-primary/40 shadow-md-dark bg-white transition-transform duration-300 group-hover:scale-105"
+                :src="profile.avatar"
+                alt="avatar"
+                loading="eager"
+            />
         </div>
         <div class="overflow-hidden">
             <h1 class="text-2xl font-bold">{{ profile.name }}</h1>
@@ -16,5 +20,13 @@
 </template>
 
 <script setup>
-defineProps({ profile: Object });
+import siteConfig from "../config/siteConfig";
+
+const { profile } = defineProps({
+    profile: {
+        type: Object,
+        required: false,
+        default: () => siteConfig.profile || {},
+    },
+});
 </script>