build(ci): convert travis-ci to github actions

.github/workflows/ci.yml

@@ -0,0 +1,26 @@
+---
+name: validate
+on:
+  push:
+    branches:
+    - master
+  pull_request:
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        node-version:
+        - 12
+    steps:
+    - uses: actions/checkout@v2
+    - uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node-version }}
+    - run: npm install -g npm@6
+    - run: make requirements.ci
+    - run: make test
+    - name: upload coverage
+      uses: codecov/codecov-action@v1
+      with:
+        fail_ci_if_error: true