deploy: add GitHub Action for server deployment

.github/workflows/main.yml

@@ -0,0 +1,35 @@
+name: Deploy to cPanel
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v2
+
+    - name: Setup Node.js environment
+      uses: actions/setup-node@v2
+      with:
+        node-version: '20.10.0'
+
+    - name: Install lftp
+      run: sudo apt install lftp
+
+    - name: Configure lftp
+      run: |
+        mkdir ~/.lftp
+        echo "set ssl:verify-certificate false;" >> ~/.lftp/rc
+
+    - name: Load Secrets
+      run: |
+        echo "machine ${{ secrets.FTP_SERVER }} login ${{ secrets.FTP_USERNAME }} password ${{ secrets.FTP_PASSWORD }}" > ~/.netrc
+
+    - name: Upload backend files
+      run: |
+        lftp -e "mirror --only-newer --parallel=100 -R ./server/ /debatehive-api/" ${{ secrets.FTP_SERVER }}