Add GitHub Actions workflow to sync with Hugging Face

.github/workflows/sync-to-hf.yml

@@ -0,0 +1,27 @@
+name: Sync to Hugging Face Space
+on:
+  push:
+    branches: [ main ]
+  workflow_dispatch:
+
+jobs:
+  sync-to-hub:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+          lfs: true
+
+      - name: Push to HF Space
+        env:
+          HF_TOKEN: ${{ secrets.HF_TOKEN }}
+          HF_USERNAME: "NghiaUS" 
+          HF_SPACE_NAME: "vietfactcheck-demo"
+        run: |
+          git config --global user.email "action@github.com"
+          git config --global user.name "GitHub Action"
+          git remote add hf_space "https://${HF_USERNAME}:${HF_TOKEN}@huggingface.co/spaces/${HF_USERNAME}/${HF_SPACE_NAME}"
+          git pull hf_space main --allow-unrelated-histories -X ours || echo "Pull failed/No changes"
+          git push hf_space main --force