feat: add Vercel deployment workflow

- Introduced a GitHub Actions workflow for deploying to Vercel.
- Configured separate jobs for preview and production deployments based on branch conditions.
- Included steps for installing Vercel CLI, pulling environment information, building project artifacts, and deploying to Vercel.

Author: mohvn

.github/workflows/vercel.yml

@@ -0,0 +1,38 @@
+name: Deploy to Vercel
+
+on:
+  push:
+
+env:
+  VERCEL_ORG_ID: ${{ secrets.VERCEL_ORG_ID }}
+  VERCEL_PROJECT_ID: ${{ secrets.VERCEL_PROJECT_ID }}
+  VERCEL_TOKEN: ${{ secrets.VERCEL_TOKEN }}
+
+jobs:
+  preview:
+    if: github.ref != 'refs/heads/main'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Vercel CLI
+        run: npm install --global vercel@latest
+      - name: Pull Vercel Environment Information
+        run: vercel pull --yes --environment=preview
+      - name: Build Project Artifacts
+        run: vercel build
+      - name: Deploy Project Artifacts to Vercel
+        run: vercel deploy --prebuilt
+
+  production:
+    if: github.ref == 'refs/heads/main'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - name: Install Vercel CLI
+        run: npm install --global vercel@latest
+      - name: Pull Vercel Environment Information
+        run: vercel pull --yes --environment=production
+      - name: Build Project Artifacts
+        run: vercel build --prod
+      - name: Deploy Project Artifacts to Vercel
+        run: vercel deploy --prebuilt --prod