cicd: add format checks

Author: PiotrKorkus

.github/workflows/format.yml

@@ -0,0 +1,38 @@
+# *******************************************************************************
+# Copyright (c) 2025 Contributors to the Eclipse Foundation
+#
+# See the NOTICE file(s) distributed with this work for additional
+# information regarding copyright ownership.
+#
+# This program and the accompanying materials are made available under the
+# terms of the Apache License Version 2.0 which is available at
+# https://www.apache.org/licenses/LICENSE-2.0
+#
+# SPDX-License-Identifier: Apache-2.0
+# *******************************************************************************
+name: Formatting checks
+on:
+  pull_request:
+    types: [opened, reopened, synchronize]
+  merge_group:
+    types: [checks_requested]
+jobs:
+  formatting-check:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4.2.2
+      - name: Cache Bazel
+        uses: actions/cache@v4
+        with:
+          path: ~/.cache/bazel
+          key: ${{ runner.os }}-format-${{ hashFiles('**/*.bazel', '**/BUILD', '**/*.bzl') }}
+      - name: Setup Bazel with cache
+        uses: bazel-contrib/setup-bazel@0.15.0
+        with:
+          disk-cache: true
+          repository-cache: true
+          bazelisk-cache: true
+      - name: Run formatting checks
+        run: |
+          bazel test //:format.check