Integrate Github Actions CI workflow

Author: nuxy

.github/workflows/ci.yml

@@ -0,0 +1,21 @@
+name: Tests
+on: [push]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    environment: ci
+    strategy:
+      matrix:
+        node-version: ['20.x', '21.x']
+    steps:
+      - uses: actions/checkout@v4
+
+      # Node.js environment
+      - name: Setup Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v3
+        with:
+          node-version: ${{ matrix.node-version }}
+      - name: Install NPM dependencies
+        run: npm ci
+      - name: Run Mocha
+        run: npm run test

.npmignore

@@ -1,3 +1,4 @@
+.github
 .vscode
 eslint.config.mjs
 test