refactor: update component names to PascalCase and improve structure

- Changed component names from kebab-case to PascalCase in various files for consistency.
- Updated `<router-view>` and `<transition>` to `<RouterView>` and `<Transition>` respectively in App.vue and base-layout.vue.
- Refactored AppNaiveUIProvider.vue to use PascalCase for Naive UI providers.
- Adjusted language and theme switch buttons to use PascalCase for icon components.
- Updated button components in demo pages to use PascalCase for Naive UI buttons.
- Modified ESLint rules in route message files to use perfectionist/sort-objects for better key sorting.
- Enhanced Vite plugin files to export loadPlugin functions for better plugin management.
- Improved plugin loading logic to handle errors and warnings more effectively.

src/pages/index.page.vue

@@ -2,6 +2,6 @@
 
 <template>
   <div>
-    <n-button @click="$router.push({ name: 'DemosCreate' })">DemosCreate</n-button>
+    <NButton @click="$router.push({ name: 'DemosCreate' })">DemosCreate</NButton>
   </div>
 </template>