chore: add rollup-plugin-copy

script/rollup.config.ts

@@ -5,6 +5,7 @@ import commonjs from '@rollup/plugin-commonjs'
 import esbuild from 'rollup-plugin-esbuild'
 import alias from '@rollup/plugin-alias'
 import json from '@rollup/plugin-json'
+import copy from 'rollup-plugin-copy'
 
 export default (env = 'production') => {
   const options: RollupOptions = {
@@ -46,6 +47,9 @@ export default (env = 'production') => {
         entries: [
           { find: '@main', replacement: join(__dirname, '../src/main'), },
         ]
+      }),
+      copy({
+        targets: [{ src: join(__dirname, '../src/preload'), dest: join(__dirname, '../dist') }],
       })
     ],
     external: [