Add github workflow to check scala code is formatted

.github/workflows/build-test-prValidation.yml

@@ -9,8 +9,8 @@ concurrency:
   cancel-in-progress: true
 
 jobs:
-  check-code-style:
+  check-headers:
-    name: Check / Code Style
+    name: Check / Headers
     runs-on: ubuntu-20.04
     steps:
       - name: Checkout
@@ -27,12 +27,12 @@ jobs:
       - name: Cache Coursier cache
         uses: coursier/cache-action@v6.2
 
-      - name: Code style check
+      - name: Check headers
         run: |-
           sbt -jvm-opts .jvmopts-ci \
           -Dsbt.override.build.repos=false \
           -Dsbt.log.noformat=false \
-          verifyCodeStyle
+          headerCheckAll
 
   pull-request-validation:
     name: Check / Tests

.github/workflows/format.yml

@@ -0,0 +1,24 @@
+name: Scalafmt
+
+permissions: read-all
+
+on:
+  pull_request:
+    branches: ['**']
+
+jobs:
+  build:
+    name: Code is formatted
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout current branch (full)
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+          persist-credentials: false
+
+      - name: Check project is formatted
+        uses: jrouly/scalafmt-native-action@v2
+        with:
+          version: '3.6.1'
+          arguments: '--list --mode diff-ref=origin/main'