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.

vite-plugins/01.unocss.ts

@@ -1,10 +1,12 @@
-import type { PluginOption } from 'vite';
+import type { ConfigEnv, PluginOption } from 'vite';
 import UnoCSS from 'unocss/vite';
 
-export default [
-  // https://github.com/antfu/unocss
-  // see uno.config.ts for config
-  UnoCSS({
-    checkImport: true,
-  }),
-] satisfies PluginOption;
+export function loadPlugin(_configEnv: ConfigEnv): PluginOption {
+  return [
+    // https://github.com/antfu/unocss
+    // see uno.config.ts for config
+    UnoCSS({
+      checkImport: true,
+    }),
+  ];
+}