chore: e2e tests

.github/workflows/e2e.yml

@@ -0,0 +1,22 @@
+name: End-to-end tests
+
+on:
+  schedule:
+    - cron: '20 4 * * *'
+  workflow_dispatch: {}
+
+jobs:
+  e2e:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version: [18.x, 20.x]
+    steps:
+    - uses: actions/checkout@v4
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v4
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - run: npm ${{ vars.NPM_CI_FLAGS }} ci
+    - run: npm run -- test -p e2e