ops: ci action to lint redoc

.github/workflows/test-redoc.yml

@@ -0,0 +1,20 @@
+name: lint openapi spec
+
+on: 
+  pull_request:
+    paths:
+    - 'server/**'
+  push:
+    paths:
+    - 'server/**'
+jobs:
+  redoc:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Installing Vaccum
+        run: npm install -g @quobix/vacuum
+      - name: Generating OpenAPI spec
+        run: cargo run --features runtime-env --manifest-path server/Cargo.toml --bin redoc_ci > openapi.json
+      - name: Vaccum lint
+        run: vacuum lint openapi.json