meta: add GitHub Actions CI (#5)

* meta: add GitHub Actions CI

* meta: remove Travis CI

Author: WikiRik

.github/workflows/ci.yml

@@ -0,0 +1,34 @@
+name: CI
+
+on:
+  pull_request:
+
+jobs:
+  lint:
+    name: Lint code
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 18.x
+          cache: 'npm'
+      - run: npm ci
+      - run: npm run eslint
+  build-and-test:
+    name: Build and test code
+    runs-on: ubuntu-latest
+    needs: lint
+    strategy:
+      matrix:
+        node-version: [14.x, 18.x]
+    steps:
+    - uses: actions/checkout@v3
+    - name: Use Node.js ${{ matrix.node-version }}
+      uses: actions/setup-node@v3
+      with:
+        node-version: ${{ matrix.node-version }}
+        cache: 'npm'
+    - run: npm ci
+    - run: npm run build
+    - run: npm run test