feat: pake can use external scripts

bin/helpers/combine.ts

@@ -0,0 +1,17 @@
+import path from 'path';
+import fs from 'fs';
+import { npmDirectory } from '@/utils/dir.js';
+
+export default async function combineFiles(files: string[]) {
+  const output = path.join(npmDirectory, `src-tauri/src/inject/_INJECT_.js`);
+
+  const contents = files.map(file => {
+    const fileContent = fs.readFileSync(file);
+    if (file.endsWith('.css')) {
+      return "window.addEventListener('DOMContentLoaded', (_event) => { const css = `" + fileContent + "`; const style = document.createElement('style'); style.innerHTML = css; document.head.appendChild(style); });";
+    }
+    return fileContent;
+  });
+  fs.writeFileSync(output, contents.join('\n'));
+  return files;
+}