add secret scanning

.github/workflows/secretScan.yml

@@ -0,0 +1,16 @@
+name: gitleaks
+
+on: [push, pull_request]
+
+jobs:
+  gitleaks:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+        with:
+          fetch-depth: '0'
+      - name: gitleaks-action
+        uses: gitleaks/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          GITLEAKS_LICENSE: ${{ secrets.GITLEAKS_LICENSE}} # Only required for Organizations, not personal accounts.