build: add github workflow and remove travis

.github/workflows/test.yml

@@ -0,0 +1,34 @@
+name: Tests
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  integration:
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node-version: [14.x, 16.x, 17.x]
+
+    steps:
+      - name: Use Node.js ${{ matrix.node-version }}
+        uses: actions/setup-node@v2
+        with:
+            node-version: ${{ matrix.node-version }}
+
+      - name: Checkout project
+        uses: actions/checkout@v2
+
+      - name: Install dependencies
+        run: |
+          npm ci
+
+      - name: Tests
+        run: |
+          npm run test:ci

.npmignore

@@ -1,3 +1,4 @@
+.github
 example
 example-esm
 test