Add Next.js build and artifact upload to workflow

Introduces steps to build the Next.js project and upload the build output as an artifact in the GitHub Actions workflow. This prepares the project for deployment and enables integration with GitHub Pages or other artifact consumers.

Author: dirreno

.github/workflows/nextjs.yml

@@ -78,6 +78,12 @@ jobs:
             ${{ runner.os }}-nextjs-${{ hashFiles('**/package-lock.json', '**/yarn.lock') }}-
       - name: Install dependencies
         run: ${{ steps.detect-package-manager.outputs.manager }} ${{ steps.detect-package-manager.outputs.command }}
+      - name: Build with Next.js
+        run: ${{ steps.detect-package-manager.outputs.runner }} next build
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./out
 
   # Deployment job
   deploy: