fix(webhook): add webhook.json

hooks.json

@@ -0,0 +1,18 @@
+[
+  {
+    "id": "zola-build",
+    "execute-command": "zola",
+    "command-working-directory": "/app",
+    "pass-arguments-to-command": [{ "source": "string", "name": "build" }],
+    "trigger-rule": {
+      "match": {
+        "type": "value",
+        "value": "refs/heads/main",
+        "parameter": {
+          "source": "payload",
+          "name": "ref"
+        }
+      }
+    }
+  }
+]