ci: configure GitHub actions and remove Travis

.github/workflows/node-linux.yml

@@ -0,0 +1,40 @@
+name: Node
+
+on: [push, pull_request]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      matrix:
+        node: [ '10.16', '12' ]
+
+    name: ${{ matrix.node }} (Linux)
+    steps:
+    - name: Configure Git
+      run: |
+        git config --global core.autocrlf false
+        git config --global user.name "xyz"
+        git config --global user.email "x@y.z"
+    - name: Checkout Commit
+      uses: actions/checkout@v1
+    - name: Setup Node
+      uses: actions/setup-node@v1
+      with:
+        node-version: ${{ matrix.node }}
+    - name: checkout master
+      run: git branch -f master origin/master
+    - name: install pnpm
+      run: |
+        npm install pnpm@next -g
+        pnpm --version
+    - name: pnpm install
+      run: pnpm recursive install
+    - name: run tests (master)
+      if: github.ref == 'refs/heads/master'
+      run: pnpm run test-master
+    - name: run tests (branch)
+      if: github.ref != 'refs/heads/master'
+      run: pnpm run test-branch