chore(security): add workflow for leaked secrets monitoring (matter-l…

…abs#421)

Co-authored-by: Maksym <[email protected]>

.github/workflows/secrets_scanner.yaml

@@ -0,0 +1,17 @@
+name: Leaked Secrets Scan
+on: [pull_request]
+jobs:
+  TruffleHog:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@ac593985615ec2ede58e132d2e21d2b1cbd6127c # v3
+        with:
+          fetch-depth: 0
+      - name: TruffleHog OSS
+        uses: trufflesecurity/trufflehog@0c66d30c1f4075cee1aada2e1ab46dabb1b0071a
+        with:
+          path: ./
+          base: ${{ github.event.repository.default_branch }}
+          head: HEAD
+          extra_args: --debug --only-verified