chore: add GitHub action to run tests

Author: targos

.github/workflows/nodejs.yml

@@ -0,0 +1,30 @@
+name: Node.js CI
+
+on:
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  test:
+    name: Test on Node.js ${{ matrix.node-version }} and ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        node-version: [8.x, 10.x, 12.x, 13.x]
+        os: [ubuntu-latest, windows-latest, macOS-latest]
+    runs-on: ${{ matrix.os }}
+    steps:
+    - uses: actions/checkout@v1
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - name: npm install and test
+      shell: pwsh
+      run: |
+        npm install
+        npm test
+      env:
+        CI: true