Add hardhat test to CI

.github/workflows/test.yml

@@ -0,0 +1,33 @@
+name: test
+
+on:
+  workflow_dispatch:
+  pull_request:
+  push:
+    branches:
+      - main
+
+jobs:
+  check:
+    strategy:
+      fail-fast: true
+
+    name: Hardhat tests
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          submodules: recursive
+
+      - name: Setup Node.js
+        uses: actions/setup-node@v2
+        with:
+          node-version: '14'
+
+      - name: Install dependencies
+        run: npm ci --ignore-scripts
+
+      - name: Run Hardhat tests
+        run: |
+          npx hardhat test
+        id: test