Added workflow

.github/workflows/rust-sec.yml

@@ -0,0 +1,15 @@
+name: Security audit
+on:
+  push:
+    branches:
+      - "*"
+  schedule:
+    - cron: '0 0 * * *'
+jobs:
+  security_audit:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions-rs/audit-check@v1
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}