Publish the PDL schema on https://ibm.github.io/prompt-declaration-language/dist/pdl-schema.json (#112)

Author: mandel

.github/workflows/mkdocs-gh-pages.yml

@@ -50,6 +50,8 @@ jobs:
       - name: Copy viewer
         working-directory: ./pdl-live
         run: cp ./dist/bundle.js ../docs/dist/bundle.js
+      - name: Copy schema
+        run: cp ./pdl-schema.json ./docs/dist/pdl-schema.json
       # Docs
       - name: Setup Pages
         uses: actions/configure-pages@v5