added madge and CI check

Author: mtrezza

.github/workflows/ci.yml

@@ -7,6 +7,25 @@ on:
     branches:
       - '**'
 jobs:
+  check-circular:
+    name: Circular Dependencies
+    timeout-minutes: 5
+    runs-on: ubuntu-18.04
+    steps:
+      - uses: actions/checkout@v2
+      - name: Use Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: '10.14'
+      - name: Cache Node.js modules
+        uses: actions/cache@v2
+        with:
+          path: ~/.npm
+          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
+          restore-keys: |
+            ${{ runner.os }}-node-
+      - run: npm ci
+      - run: npm run madge:circular
   build:
     runs-on: ubuntu-18.04
     timeout-minutes: 30