chore: use copy builder from unbuild to copy type definitions (#125)

* chore: use `copy` builder from `unbuild` to copy type definitions

Fixes #117.

* fix linter

Author: tobiasdiez

build.config.ts

@@ -0,0 +1,12 @@
+import { defineBuildConfig } from 'unbuild'
+
+export default defineBuildConfig({
+  entries: [
+    {
+      builder: 'copy',
+      input: 'src',
+      pattern: 'graphql-server.d.ts',
+      outDir: 'dist',
+    },
+  ],
+})

package.json

@@ -16,7 +16,7 @@
     "dist"
   ],
   "scripts": {
-    "prepack": "nuxi prepare playground && nuxt-module-build build && shx cp src/graphql-server.d.ts dist",
+    "prepack": "nuxi prepare playground && nuxt-module-build build",
     "build": "pnpm prepack",
     "dev": "nuxi dev playground",
     "dev:build": "nuxi build playground",