fix: missing dist when pnpm install

Author: hannoeru

.github/workflows/publish.yml

@@ -14,6 +14,7 @@ jobs:
         with:
           node-version: 12
           registry-url: https://registry.npmjs.org/
+      - run: mkdir dist && cp package.json dist/package.json
       - run: npm i -g pnpm
       - run: pnpm install --frozen-lockfile
       - run: pnpm build:prod