add circular dependency detection to CI

Author: mtrezza

.github/workflows/ci.yml

@@ -52,6 +52,26 @@ jobs:
        - name: Install dependencies
          run: npm ci
        - run: npm run lint
+  check-circular:
+     name: Circular Dependencies
+     timeout-minutes: 5
+     runs-on: ubuntu-18.04
+     steps:
+       - uses: actions/checkout@v2
+       - name: Use Node.js ${{ matrix.NODE_VERSION }}
+         uses: actions/setup-node@v1
+         with:
+           node-version: ${{ matrix.node-version }}
+       - name: Cache Node.js modules
+         uses: actions/cache@v2
+         with:
+           path: ~/.npm
+           key: ${{ runner.os }}-node-${{ matrix.NODE_VERSION }}-${{ hashFiles('**/package-lock.json') }}
+           restore-keys: |
+             ${{ runner.os }}-node-${{ matrix.NODE_VERSION }}-
+       - name: Install dependencies
+         run: npm ci
+       - run: npm run madge:circular
   check-mongo:
     strategy:
       matrix: