Add validator workflow

.github/workflows/pull_request.yaml

@@ -33,3 +33,9 @@ jobs:
     permissions:
       pull-requests: write
       contents: read
+
+  validation-checker:
+    uses: ./.github/workflows/validation-check.yml
+    permissions:
+      pull-requests: write
+      contents: read

.github/workflows/validation-check.yml

@@ -0,0 +1,17 @@
+name: Validation
+
+on:
+  workflow_call:
+
+jobs:
+  validate-services:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: FINOS CCC Validator
+        uses: sshiells-scottlogic/[email protected]
+        with:
+          targetDir: "./services"