Create ci.yml

.github/workflows/ci.yml

@@ -0,0 +1,14 @@
+name: CI
+on:
+  push:
+  merge_group:
+  pull_request:
+
+jobs:
+  check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: CI
+        uses: asdf-vm/actions/install@v2
+        with:
+          command: 'scarb fmt --check'