Added Zola check

Signed-off-by: Alexander Borsuk <me@alex.bio>

.github/workflows/check.yml

@@ -0,0 +1,22 @@
+name: Check site validity
+
+env:
+  ZOLA_VERSION: 0.17.1
+
+on:
+  pull_request:
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    environment: production
+    name: Check Zola build
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Build with Zola
+        run: |
+          wget -O zola.tar.gz -c https://github.com/getzola/zola/releases/download/v${ZOLA_VERSION}/zola-v${ZOLA_VERSION}-x86_64-unknown-linux-gnu.tar.gz
+          tar -zxvf zola.tar.gz
+          ./zola build