cd: add workflow for deployment

- Added a GitHub Actions workflow to handle the deployment process.
- Automates the deployment steps to streamline the release pipeline.
- Ensures consistent and reliable deployments across environments.

.github/workflows/deploy.yaml

@@ -0,0 +1,23 @@
+name: Portfolio - Deploy
+
+on:
+  workflow_dispatch:
+
+jobs:
+  build:
+    name: Deploy Application
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout Code
+        uses: actions/checkout@v4
+
+      - name: Download Build Artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: dist
+
+      - name: Deploy to GitHub Pages
+        run: |
+          npm install -g gh-pages
+          npm run deploy