ci: add trufflehog secret scan

.github/workflows/trufflehog.yml

@@ -0,0 +1,60 @@
+###############################################################
+# Copyright (c) 2024 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.
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# SPDX-License-Identifier: Apache-2.0
+###############################################################
+
+name: "TruffleHog"
+
+on:
+  push:
+    branches: ["main"]
+  pull_request:
+    # The branches below must be a subset of the branches above
+    branches: ["main"]
+  schedule:
+    - cron: "0 0 * * *" # Once a day
+  workflow_dispatch:
+
+permissions:
+  actions: read
+  contents: read
+  security-events: write
+  id-token: write
+  issues: write
+
+jobs:
+  ScanSecrets:
+    name: Scan secrets
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7
+        with:
+          fetch-depth: 0  # Ensure full clone for pull request workflows
+
+      - name: TruffleHog OSS
+        id: trufflehog
+        uses: trufflesecurity/trufflehog@7e78ca385fb82c19568c7a4b341c97d57d9aa5e1 #v3.82.2
+        continue-on-error: true
+        with:
+          path: ./  # Scan the entire repository
+          base: "${{ github.event.repository.default_branch }}"  # Set base branch for comparison (pull requests)
+          extra_args: --filter-entropy=4 --results=verified,unknown --debug
+
+      - name: Scan Results Status
+        if: steps.trufflehog.outcome == 'failure'
+        run: exit 1  # Set workflow run to failure if TruffleHog finds secrets