infra: add Forgejo deploy script

.forgejo/workflows/deploy.yaml

@@ -0,0 +1,18 @@
+name: Deploy eolas-app
+on:
+   push:
+      branches: [main]
+jobs:
+   deploy:
+      runs-on: ubuntu-latest
+      container: node-22
+      steps:
+         - uses: actions/checkout@v3
+         - run: npm install
+         - run: npm run build
+         - run: |
+              echo "${{ secrets.VPS_DEPLOY_USER_SSH_KEY }}" > /tmp/ssh_key
+              chmod 600 /tmp/ssh_key
+              ssh -i /tmp/ssh_key -o StrictHostKeyChecking=no ${{ vars.VPS_DEPLOY_USER }} "bash -c 'cd /var/www/eolas-app && rm -rf * .[^.]*'"
+              scp -i /tmp/ssh_key -o StrictHostKeyChecking=no -r ./* ${{ vars.VPS_DEPLOY_USER }}:/var/www/eolas-app/
+              rm /tmp/ssh_key