feat: refactor Vite plugin loading mechanism and improve plugin management

vite-plugins/01.unocss.ts

@@ -1,7 +1,8 @@
-import type { ConfigEnv, PluginOption } from 'vite';
 import UnoCSS from 'unocss/vite';
 
-export function loadPlugin(_configEnv: ConfigEnv): PluginOption {
+import type { LoadPluginFunction } from './_loadPlugins';
+
+export const loadPlugin: LoadPluginFunction = (_pluginLoadOptions) => {
   return [
     // https://github.com/antfu/unocss
     // see uno.config.ts for config
@@ -9,4 +10,4 @@ export function loadPlugin(_configEnv: ConfigEnv): PluginOption {
       checkImport: true,
     }),
   ];
-}
+};