chore: migrate from travis-ci to github actions

.github/workflows/tests.yml

@@ -0,0 +1,34 @@
+name: Tests
+
+on:
+  push:
+    branches: master
+
+env:
+  CI: true
+  NODE_VERSION: 12
+
+jobs:
+  test:
+    name: Extension Tests
+    runs-on: macos-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v2
+
+      - name: Setup Node.js ${{ env.NODE_VERSION }}
+        uses: actions/setup-node@v1
+        with:
+          node-version: ${{ env.NODE_VERSION }}
+
+      - run: node --version
+      - run: npm --version
+
+      - name: NPM Install
+        run: |
+          npm ci
+          npm ls --depth=0
+
+      - name: Vscode test
+        run: npm run test