Enforce formatting in CI

Author: cknitt

.github/workflows/ci.yml

@@ -57,6 +57,9 @@ jobs:
         env:
           RESCRIPT_FORCE_REBUILD: 1
 
+      - name: Check format
+        run: npm run checkFormat
+
       - name: Run tests
         if: runner.os != 'Windows'
         run: opam exec -- node scripts/ciTest.js -all