Add spectral to CI

Author: heiglandreas

Diff for: .github/workflows/spectral.yml

@@ -0,0 +1,18 @@
+name: Main
+on:
+  push:
+    branches: [ main ]
+
+env:
+  SPECTRAL_DSN: ${{ secrets.SPECTRAL_DSN }}
+
+jobs:
+  scan:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install and run Spectral CI
+        uses: checkpointsw/spectral-github-action@v3
+        with:
+          spectral-dsn: ${{ env.SPECTRAL_DSN }}
+          spectral-args: scan --ok  --include-tags base,audit3